Doing this in DF is a bad idea. If you have a party that is clearly experienced and want to run it at the slightly faster pace, that's great, you go ahead and do it. But doing this with random groups who've never played together and don't necessarily trust each other leads to some pretty big headaches. Especially since in most low level dungeons, you often run with at least one brand spanking new guy. You would probably spend more time explaining/arguing how to do it than actually running the dungeon normally.

But I get what you are saying. The DPS is better when you spread at least some DoTs around. It just doesn't work with every party, and I would not trust a DF party to work well with it.