Well I can only give my experience from doing the trial, so have no idea about end-game etc. The game is buggy in parts, the tutorial isn't great, but when you get down into the meat and veg of the game it's fairly decent and quite enjoyable. The population is all on one big server from what I remember, like EVE - so there were always people on (at least when I was on) and I found most people helpful, theres a help channel and a few guilds for noobs to join which was a massive help to me.
You probablly know already but the style of play is somewhere between sandbox mmo and quest giving etc. I enjoyed what I played of it, the only reason I haven't subbed to be honest is because I'm waiting on a couple of other MMO's so don't really want to get into it at the mo.
Oh.. and they are bringing in player housing soon - if that's your cup of tea.