I always thought that making counter-attacks an important aspect of the drunken monk would help them in  solo, group, and raid scenarios.

I think Drunken monks should have a force-taunt that lasts for 2 hits, and is on a seperate immunity timer from the generalized one. In a raid, being able to take a hit or 2 off of the tank or person who drew hate would be very useful if the Drunken Monk had the survivability to last through 2 hits.

Adding in a counter attack that does damage based on the damage of the foes attack would also allow this to be a good damage dealing tool in a raiding environment, so not only would they be potentially saving the tank, they would be gaining a damage opportunity as well.

By also improving the Drunken's  hate-generation abilities that help the tank keep hate, the Drunken would be inadvertently be improving the raid's capacity to deal dps and heal w/ less chance of pulling hate, which would be their way of "adding dps," while Dragons take the direct, personal dps approach, and while Harmonious monks take the debuffing approach.

So, though I personally dont play a level 50 monk, I think taking the drunken monks in the "hate transfering, temporary tanking, counter-attacking" direction would be a solid plan.