Mm, this is gonna be a rough one. Part of what makes Rogue-like games fun is that the monsters are insanely hard and you can't fight them back to back without getting overwhelmed and be forced to retreat.
Another part of the rogue-like system is the incentive to not die, as with most rogue-like games you lose all your items and money upon defeat. If they did that in DDO, people would scream more than they'd enjoy.
Static traps already kill a ton of players. Rogue like games usually have a TON of traps on each "floor", running across one is inevitable, but usually not fatal. In DDO, almost all higher level traps are fatal.
And besides, we already have something similar to a rogue-like dungeon, and it's a pretty infuriating one at that (New Invasion!).
Some more current console/handheld versions of Roguelike games are:
Pokemon Mystery Dungeon (GBA and DS)
Izuna the Unemployed Ninja (DS)
Azure Dreams (PSX)