I have just started playing again on a very casual basis after a year or so of not playing. I have changed server, to start from scratch (and also in the hope of seeing Tacosid online for teasing).
The first thing that has struck me is that the tutorial is actually bloody brilliant. Really really good. It is a shame that it took so long to do something like that - engaging quests for meaningful experience, that teach the basics of the game, in an environment where you can meet other new players! I am having a blast in there. It has really sparked my interest in EQ again.
So what other big game changes have there been outside of the tutorial? The last expansion I really played was PoP (as far as being elemental flagged).