I don't think size (to a degree) matters. Unless you make them so small that people can't find them (thus ruining the ability for people to find them when exploring and therefore making people have to read up just to find them), most Myst fans will click on them. It's just in our nature .The stranger wrote: BUT! I have an idea, which will help us to see "recorded"events while not REALLY being in them.Though I'm not sure you will like it, many people didn't like the serenian amulet thing. You see, along the ages, players would find some little "shiny blue stones", like 2 in an age. Very little stones. Now, these stones will work just like serenia memory amulet: once a player touches them, he will see something which happened there. In public places, he may see a bit of the last "live event" which happened. In kadish tolesa vault, he will see kadish going mad, in the cleft he will see young yeesha (before she entered d'ni), in teledahn he will see the first arrival of sharper/a d'ni man in the age, and in jalak dador the player will see a d'ni game. The reason why I think it's important is because something important in a game is that you feel you are seeing the story, you are there. It was missing in uru: once 1000 people do the same journey, it gets strange. So, there are many ways to do that, and one is that. Of course, the stones will be small and there will not be many in an age, so people who don't want that won't mind, I think.
That's why I think a bahro stone object (like a waist high round column topped with a circular symbol that you can click on) would work. These would pop up in various Ages and places where various events happened, mostly for past live events or described events. They'd probably cycle on and off, just so people don't get annoyed with these pillars being everywhere. When you clicked on one, you'd be able to see what had happened there as a reenactment which you could partially interact with (walk around the people, perhaps do certain tasks).
Reason for existence: Easy, some bahro group or Yeesha wants all these new and old explorers to get a picture of what happened before. They frame it as a journey for explorers, with maybe even an in-journey plot (numbers show up somewhere? You have to do certain things?) that culminates in reward.