The Crystal tower is fine, what that need to be done is that people will be synched to the max ilevel they can be for the tier, no matter if they go in without clothes on.

That would solve most of the problems, it will still pop in more frequently than others, but less if so.

Reason, people exploit and put lower tier gear so they can force to get the Crystal Tower series, if you are level 80 you would then be synched to the max level 80 ilevel when you use Alliance roulette, meaning, you would of course queu for all, but you can't pick which one you want to get by removal of gear and the likes, highest tier not needed to do such, due to you would need gear from all the level 90 Alliance raids when at max anyway and to queu in manually as it is.