I'm not as concerned about Jolee and GK's lead, myself. It is an annoyance, but not as big a deal as the other issue between Jolee and GK...
Jolee's zeta, which revives defeated Jedi, grants them Crit Immunity for 5 turns. Crit Immunity means they can't be crit, obviously. With nobody getting crit, GK can't taunt. GK is a tank, and you want/need him to be taunting! Moreover, with nobody getting crit, Barriss' zeta won't work. So Jolee's zeta means that GK and Barriss don't work as you need them to. That is a much bigger issue than the issue of Jolee's heal not triggering the mass assist, IMO
(although I do agree that if the team is all Jedi, and the whole team is healed, then it IS a team heal, and it should trigger a mass assist)
But really, say for example GMY is revived from Jolee's zeta (this is a zeta we are talking about here!), with only 80% health and crit immunity. GMY will be focussed down, while GK is standing there incapable of protecting him. So the revive, and the zeta, was wasted. Much bigger issue, IMO.
That said, making points like these in the forums yields nothing, so @Ninjah9, nothing will come of it (except the standard same few people that will come in to defend whatever CG does)