If your level 80 gear can be synced down why can't they just make it so your under leveled gear (or no gear at all) is synced up to the minimum iLVL of the raid? This way the game doesn't have to care what iLVL you are while queuing you for your roulette. If you have it unlocked you can be a put into that raid.

I also think the issue has to do with how matchmaking works, or at least how I think it works. Right now it takes WAY TOO LONG to get a party for anything besides the first three raids. I feel like matchmaking in this game cares more about getting people into a raid as fast as possible instead of making sure those people who are queued for a certain raid are getting the players they need. I wouldn't be surprised if the game had 23 people for Rabanastre one person was queuing for and then remove 22 of them because they could do Sycrus Tower RIGHT NOW instead of waiting on that one more player.