I find that round robin blackhole fixes most of the desync problems due to elite affixes. Using event horizon lets me get rid of any ground effects that do go off.

I'd be interested in seeing how a 3wiz+x team would go, definitely potential there. As long as they can help perma cc the RG then I'd be happy, because making the RG a snoozefest is one of my favourite things about 4wiz.

I'm building towards an exp set on each wiz to farm paragon from ~GR35. It's possible to get ~170% increased exp and still have Tal6, which should be more than enough DPS for GR35.