Something I would like to setup one day with my 4 druids is a rolling dps/heal macro.

D1:Rejuv, insectswarm, lifebloom, moonfire
D2:lifebloom, moonfire, rejuv, insectswarm
D3:Insectswarm, rejuv, Moonfire, lifebloom
D4:Moonfire, lifebloom, insectswarm, rejuv

do some math timing and put some wraths at the end while moonfire and IS are still up.

Problem is that its all target switching so maybe a pair of /clicks and cast sequences it might work. But you will always have 4x rejuvenations on and lifebloom blooming every 2 seconds.