Anti-multiboxers are getting smarter.

Last night I got raped several times and got immediately corpse looted and was sent back to the GY. All the assist X macros where not working anymore and I could not tell the 4 shamans who to target anymore.
Does this happen often to you?

I need to start moving main focus target, ie if my main dies and gets looted I need to be able to swap to another toon and make her the main. I guess I must have missed the macros for that.

What would you recommend? I run 1 lock 4 shamans btw