in a group you are normally don't take the aggro , nor hit if the the tank do a good jobs.
and feint from drg (that you can get) can be used freely.

Haymaker is a rest of the monk from V1... for a dps class it's a useless skill:
1) you need to evade an attack
2) it's in the GCD, means you will loose 1 skill in your rotation for launch it.

as it stand is the most useless skill of the monk.