there is no perfection solution to this. You don't get all that killing power without any drawbacks.

A couple things you can do,
1. suicide-1 die all die.
2. rez,- kill everyone around, rez the dead
3. release the dead, keep your main group going. After the dead rez up, make him/them auto run to you. A.K.A. regroup.

Personally, I always tries to do option 2 and 1. One of my toons dies. Usually this means I am going up against a crowd. I will fight them all. So either I win by wiping all of them out, or I got wiped out.