For me something along the lines of:
-Starsurge hits 2nd nearby target for 50% of the dmg.
-Some weak spammable spell while moving either giving us or not giving us lunar/solar energy.
-Hurricane to Rain of Fire 2.0 or make it cast it much fastern with more dmg, same to astral storm. so tired for examble during imme hc trying to aoe the adds and having to move so often and cancel the cast.
-Less need for crit to be "competive". Maybe Cata Shooting stars and with the upcoming lvl100 talent giving us permanent eclipses, "make us" stack mastery.
-Cata BOOM Shrooms back please.
-Spell dmg taken debuff back please.
-Either passive Nature's Grace, make it last longer, or something else.
-Make solar eclipse more interesting
-Maybe "grazy" idea but giving us 2 more spells to cast during eclipses. During lunar you spam Starfire+[spellname], solar Wrath+[spellname] and maybe make them interact (sp?) with each other someway. Would imo make more funnier gameplay. Starsurge on cd, Starfire/Wrath+[spellname]+Dots = <3
That's all which kinda bother me with Boomkin atm. In particular AoE/cleave.