The system it's like this to "trap" certain players to keep that que moving. I mean, now each boss drop 8 tokens so in reality there is no reason for having different currencies. All turns could give 1 to each member and let them buy whatever they wanted with current cost.

Anyway as a tip, if you haven't done this yet out of desperation, try to hold a little bit the rol for the piece you want so others distributed first. FFXIV player base is rather casual and a good amount of participants will roll for every items just to get something and move on, unless you end with players wanting to get X glamour.

At the very least will incrase your chances a bit.