Im testing FF14 and Marvel Heroes at the moment.
I tested Neverwinter a couple weeks ago and hope to get reinvited to that.
I've tested the above of course, all the world of warcraft expansions. Some halo mulitplayer stuff. Diablo 3

. Secret World. And the knights of the old republic.
In FF14's newest iteration there's this awesome moment in the woods where the tree ent that was sleeping gets up, walks ten yards, then replants himself. What was awesome about this is that he wasn't really visible. And until he started moving you had no idea that one fo these trees was not like the other. Love to see something like this in eso.
Secret world is the one I am playing majorally at the moment. I played wow for 6 years. Tried the old republic for a few months. I've played Tera, vindictus and DCU Online but was never super wow'd with em, beyond maybe like level 10-15.