Just a tiny heal to keep that tank a bit longer alive could make it - but NO : we don't need healer!!!
what if thay had first build for pve (assault), and support druid/ summy/ cleric for pvp ?
don't expect evyone of them have unloced 3 builds
try recrut someone with healing aspect insted of dps (or ask did he can play both specs before you invit him to pt)
remeber also reseting build/stats in f2p cost 150-250bc if you not have perm water of life/death per 1 time, so ther can be problem somone don't had inaf gold to master secound aspect
(in f2p thers some ppl whos not mastered first aspect too
)