As mentioned before, and just to reiterate/get my 2 cents in, it's also really important to add the ability to choose what you're queuing for in finer detail, among other options, in the Group Finder. For example, while the tool is great for FPs because people can choose which FPs they'd like to queue for, the same is not true for Heroics... in gen chat last night, I asked everyone why so many people were still LFGing in chat vs GF, and the overwhelming consensus was that they weren't able to choose what Heroics they'd be queuing for, so they'd rather do it in chat... sad part is that, now that we have a healthy pop even on pre-endgame planets after transfers, we still have to archaically find people to group with because choices are limited
Also, Bioware recently released news of Ultima Forever, where one of the choices is to "Sacrifice" by leveling down temporarily and helping others; while I understand that these are two completely different games, if stats can be boosted for WZs, could they not be lowered/limited for FPs you've out-leveled, so that you can help others/experience FPs you never got a chance to?