Since I'm trying my best to get more involved with OS I'll throw my two cents in here.
I have a decent amount of knowledge regarding CC licenses. (Half a year of unspoken opinions coming right up! Please bear with me...

) In the
main thread some of the issues regarding them were mentioned back in September 2011:
Mac_fife wrote:I think another thing to keep in mind about the differences between CC (and I'd agree that CC-By-SA, or possibly CC-By-NC-SA, would seem to be the most likely license from the CC stable) and GPL is that CC does not have the "viral" element that GPL has: It is permissable to create "collections" that include licenses other than CC (provided that the other licenses are not directly incomptible, e.g. containing a viral clause that overrides the CC license).
In the case of the GPL being more "viral " than CC licenses, I believe this is an incorrect statement (At least as far as America is concerned.). Creative Commons has a
VERY viral effect on free media today, and with it, creates it's own issues. For instance, media released under the CC-BY license can be altered, changed, even sold, as long as the author is credited. Cyan certainly doesn't want to go down this route, as it's not restrictive enough for their medium.
I could go on and on, but it appears that you all have already settled on proposing either the CC BY-SA or CC BY-NC-SA if Cyan chooses a CC license. These hold less of the issues as other CC licenses, but could possibly raise big red flags if Cyan intendeds to also license the SFX and music assets (Which I personally hope they do to an extent, as it could benefit everybody, including themselves. More on this will be provided if I'm asked.

).
Branan wrote:...and the CC FAQ is rather vague (and also unfortunately focused on audio and text, rather than digital art).
This is mostly by design, as it is
VERY popular among audio communities. Artists like
Kevin MacLeod, and even our very own
Turjan Aylahn use them for their work. However, some music artists, like
Tony Diana (A less outspoken community member), choose to not use them for their free work because they are less restrictive. That's not to say it's not a good license for art though; many images on DeviantArt are licensed under CC licenses, as are many images on Wikipedia and Wikimedia Commons. However, if Cyan prefers having more control (meaning, under a CC license, no one would have to ask them (Cyan) if they could modify something; likewise, if Cyan disapproved of any altered assets, they could not ask it to be removed or altered by the artist and stay inside their own license terms. Also, it is not possible to revoke a CC license, putting Cyan in a sticky situation should something like this actually arise.

) then they should pursue another license type. Creative Commons licenses greatly favor the end user, which is good in many cases; but like I said, Cyan likes to have a greater say in how folks use their creations, which I have come to respect some aspects of.
So, all that said, what are my personal suggestions on this? Well first of all I'd avoid a GPL license like the plague (Ok, maybe not like the plague, but, from what I know about it, I'd advise against it.). They're far less rounded than other licenses and could cause issues down the road, since all derivatives would also be under a GPL license (Which is not a very fair thing to ask artists and age creators if you ask me.). I don't see how this could be very attractive to Cyan either.
So with GPL and CC gone, what does that leave? I'd suggest that, since this is mostly an isolated case of protected sourcing, Cyan draft their own license; or, likewise, we could draft one and present it to them for further modifications or changes. It wouldn't even
have to be more than a couple pages (More like a EULA of sorts, but quite a bit more restrictive.), and, if they wanted, they could model it after an applicable CC license. (To my knowledge there is no legal issue with this. CC licenses are consensual by their very nature, and creating one modeled after one, with it's own derivative text, shouldn't be against Creative Commons' (The foundation) terms.)
Now, back to the topic at hand, I do not believe people need to register with Cyan in order to alter or modify their assets under a public license. What's the purpose of the license in this case if Papa Cyan's gonna be looking over your shoulder the entire time? If they were doing that, this matter could have been settled months ago with a EULA between Cyan and the individual(s) making the changes (Similar in design to Cyan's FCA license agreement.). So I don't believe this sort of licensing is fair in terms of furthering OS development, as it creates an unnecessary barrier of bureaucracy between us and Cyan. Cyan doesn't have the time or resources to keep up with such a system either, and it would get confusing at that. Now, if an OpenUru repository was created that kept track of those who have downloaded or forked the assets is put in place, where the person acquiring the assets needs to leave a reason why they're using them (Similar to wiki edit notes) then I think that would work. Otherwise, you're looking at an overcomplicated mess.
Mac_fife wrote:The barrier for gaining a license would need to be very low for that (maybe even a self-service sign-up), but just enough for Cyan to be able to say "No, you're not part of the target demographic" if such a need for rejection should ever arise.
That isn't fair. Even if a person wanted to utilize the assets for, what I will call, "inappropriate designs," it should not be in the power of Cyan to make such restrictions. However, if they wanted to prevent such a thing and be fair about it, there could always be a clause in the license agreement that puts the person in violation of Cyan's copyright if they make such modifications. (Such "innapropriate designs" could be restricted to language, nudity, and vulgarity for instance, and could be broadened depending on Cyan's legal preferences.)
Also, if they license it at all it needs to be available to everyone on the planet, not just fans. A non-commercial clause in the license should fix anybody trying to make money off of their work.
JWPlatt wrote:My concept of this is that if there were registration, it could be a non-discriminatory click acceptance of terms that also possibly include what is generally known as the FCAL within typical bounds of fan use such as derivative content images on websites. Except now it is open, not confidential, while simultaneously unburdening Cyan from such management and the community from having to wait months for approvals. I feel this is necessary to encourage content development. Have I explicitly requested this yet? No, not yet. But it is implied in the questions we are asking and the desire for simplicity as we build toward a solution.
I would not request it yet; wait until further discussion can be had. I'm still personally against anything like this, but maybe, with further discussion, we'll all figure out a place where we can meet in the middle.
Additional links of interest: