I picked a thief so I can get through any locked door or disarm any trap. But one of the cool things they have in DDO is that they don't just have locked doors that only thieves with lock picking skills can get through. They have a whole slew of locked doors that tied to different attributes such as levers that rely on strength and runes that rely on wisdom or intelligence. I think this is great because (a), it makes anyone without lock-picking skills feel special by giving them their own unique door t unlock and (b), it really forces you to team up and create a rounded party so you can get to everything in the dungeon.
Of course it sucks for loner thieves who are trying to get through the whole dungeon by themselves.
Also, no there aren't any charisma based parties to sneak into. How cool would that be?!