You just don't know how to play it properly! The balance between passive and active skills is perfect and character development and item farming are equally as good. The game is a little unbalanced once you get to know it and know how to farm, but that's because IronLore went bust
I'm with Deific on this one, I never found Titan Quest & expansion anything better than a filler game. I wanted to love it, I really did, but it was just so bland and souless. The skill trees are decent, as are the classes, but the game never drew me in. I did complete it, but never progressed to the higher difficulties, it was just too 'samey' in a way D2 never seemed.
If only they'd update D2 online to a decent res.