Hey I would be tremendously grateful if someone suggested me a decent dungeon crawler game for PC, featuring complex character development system and party management, rewarding process of grinding (if possible) and challenging battles, great variety of the stuff and high replay value? Much like Wizardry 8 but not from the series, not a Might and Magic incarnation or either of the Legend of Grimrock games. Not necessarily set in a dungeon, and not necessarily featuring grid-based movement.
PS since a certain point in time, I'm aware of Grimoire, and I really can't wait for it finally released.
Icewind Dale sounds like a good fit. Lots of party management, tactical battles, grinding is rewarding, lots of loot, decent replay value. Not grid-based or in a single dungeon but lots of dungeon-diving and the story keeps you interested.
When you say complex character development, do you mean complex story and choices, or complex builds and tactics? Do you want more RPG or more dungeon crawler?
If you mean story/RPG, then Dragon Age Origins is good, but if you mean complex builds maybe not. On high difficulties it's pretty tactical and action-oriented, but the replay value comes mostly from the story changes and not the battles, and you don't have to worry about grinding areas very much.
I doubt I'm going to like any of Icewind Dale, Baldur's Gate, or Dragon Age (I haven't played these myself, but watched other people play), and honestly I never regarded Bioware games as much entertaining to me (except Neverwinter Nights, which is my favourite rpg, by the way).
What I meant when was speaking of character development was precisely about complexity and deepness of the rpg system of a game -- how varied, consistent and thought-out classes, races (with their talents and traits), stats, skills etc it offers, and how these elements exist individually and how they constitute the whole system, how they influence the gameplay etc. Frankly speaking, normally I never care about the plot or story too much (except cases when it's noticeably poor in quality or stunningly great), but I do care about roleplaying and highly appreciate when it's possible to solve certain quests more than in one way. Though I was asking exactly for a dungeon crawler, not a 'pure RPG'.