Since most players now queue with low ilvl gear to get easier/faster dungeons trials and raids making the queues longer for content on HW, SB and ShB i would recommend to change the reward for the roulettes make them be based on the lvl and ilvl of the player during the queue
as example

lvl 90 player queuing for alliance roulette with ilvl 560 and above receive maximum reward

lvl 90 player queuing for alliance roulette with ilvl 70 receive reduced exp/gil rewards and only poetics tomestones

the ilvl needed for maximum reward should be the same as the gear available for free (jobquests coffer and rolequest) at lvl 50/60/70/80/90

And sorry for typos and bad grammar English is not my first language