A couple people have mentioned mid thirties for the character level at the end of the game.
I think 50+ is relatively accurate. IIRC 30 hours was mentioned if you just concentrate on the main plot and skip the side quests, but I don't recall if that was said before or after they finished balancing the game. I've been avoiding topics about the end of the game, where possible, so if people have mentioned their playtimes, I have not seen them.
What do you mean by a 'good' loot system? Various people have made positive and negative comments on the system in this game. There is randomly generated loot, as well as specific set pieces in specific locations.
I think once you enter the final area in the game, the building is locked and you can not get out (don't know how big the area is). If you wanted to go back and clear up any unfinished quests or explore some more, you would have to revert to a save before that.
Welcome to the forum.
