Using MD, Readiness and MD again with Multishot to get a lot of adds onto the tank is hardly a new or groundbreaking strategy.
One thing that helped our Group alot for Halfus HC (as MM) doing the small green Drakes 1st is Missdirect them to the Tank then Rapidfire, Readyness missdirect aggain and asap. another Rapidfire while Pressing Multishoot like hell! You can get a pretty high DPS for bombing i went about 40-50k dps for bombing others may get more. So rapidfire while bombing is a good Idea @ Halfus.