My very first Frostfire (which went VERY badly) led to the creation of "The Predominantly Dead" sg. We never teamed again, however it was funny at the time.
In Stamina, 2 end mod and a performance shifter +end proc (also a healing proc if its a tank).
Health varies a lot depending on build. At the very least the combined healing and end proc gets slotted. A lot of the time I slot at least one recovery global in there too.
My Mastermind is not a lazy one. I'm constantly frantically clicking.
For specific powers, one reason I love fly though is its the lazy travel power. I love how relaxed getting to most missions is.
I hated it on live. Buffs not strong enough, debuffs not strong enough. The real issue later on is having to spam that single target heal like crazy. I've not tried it on Homecoming, rerolled as Necro/Dark and having a much better time.