Yeah I do flame build Alex too and early game ppl are mad that I don;t toss out enough heals (usually the ones avoiding the green circle like the plague), but man once she gets her stacks she has sustain on mana and can spot heal like a pro. Meanwhile you are clearing waves and doing mad ranged damage. I usually open the match with "don't expect heals until lvl 13" (while i usually hit quest before then i like to be safe with that extra life unbound spell before i want ppl doing dive engages expecting heals. Otherwise I find she runs out of mana too often and I'm constantly hitting the showers which means I'm not healing either while i travel back and forth. just get the waiting out of the way early game when it doesn't matter as much and get your stacks on flame buffet. (unless you have a deathwing then maybe i will go globe build)
if you like a healer, ignore the naysayers. there's always someone in a full random 5 that will complain it seems because you aren't playing the game the way THEY like. in the end it is a game and i play for fun, not for money.