Character interaction: in wich way? npcs are talking to eachother, sometimes you hear something you can help with and then you'll ask him...Except for that i think its just a really improved morrowind system, but im not sure what that morrowind system was...

main story: Not doing it yet... Im doing some guild quests and arena fights first...

I cant be of much use with those questions <img src="/ubbthreads/images/graemlins/puppyeyes.gif" alt="" /> the first is just hard to explain, but it works well.