More often than not I find myself in a dungeon with traps and group with no rogue. Or with rogue who doesn't disarm traps. What make it worst is disarming traps and lock picking is restricted to rogues only. Multiclassing rogue mess up some builds and/or doesn't fit properly in them. I think a solution to the problem is to add more rogue like classes and give them disarm trap and pick lock skill like beguiler, spelltheif, swashbuckler, scout, and artificer.