In this game there is no wasted loot! For example our tank in coil is gearing his DRG to full allagan while he plays his PLD. Unlike wow, where the loot is wasted all the time.
Any drops that happen will be useful no matter what untill you have a team with full 90 on all their classes.

Not to mention the fact that you can easily give your alt characters full darklight and a relic, pretty much coil geared with no limitations. All the drops in crystal tower also will be going to alts if the teams don't need it or a class is missing.

I have gear for alts I never intended even making! Why are people complaining about the capability to gear alts? Any myth you spend becomes forfeit the moment an allagan peice drops that is equal in slot. You have to come to terms with that as you go through coil