Bioware your group finder is broken and these are my suggestions about how to fix it (in order of priority):
1. Rewards are not consistently granted under varying conditions, e.g. in a premade group, or when members die or disconnect during the run. Just loosen up the reins already... BH comms will mean nothing once cartel points are introduced.
...oh and the conduct of your GMs is simply shameful when responding to trouble tickets on this matter. Too bad they hide behind an anonymous protocol droid name.
2. Players should NOT be able to choose multiple roles (e.g. tank/damage, or heal/damage) unless they have the Field Re-spec perk unlocked.
3. Tier 1 and Tier 2 hardmode flashpoints are completely off-balance. Tier 2 should be Lost Island, Kaon, False Emperor, and Directive 7. Everything else should be Tier 1.
4. Manually inviting a member into your group should re-queue the group automatically.
5. Group finder queue should automatically eject players who are AFK.
6. A group leader role selection would be appreciated. Despite what the elitist snobs say, not everyone knows the strats for D7 and Lost Island.