The cynic in me definitely thinks the devs just want players to need more days (ie. more months of subscription) to level all the jobs they want to play. The nerf to lv 90 alliance raid exp and buff to the roulette means the time-gated way of doing it is relatively better now.

But on the surface, I think letting dps players keep doing alliance raids for exp is a good idea. Otherwise the best option is to keep queuing for dungeons, which means dps queues will be worse for them. Perhaps it should be taken even further and the devs should consider further increasing the default exp from the lv 60/70/80 alliance raids as well. This would made dungeon queues less bad for dps for levels 61-89, and also help make alliance raid roulette not just be Crystal Tower roulette so often, and also generally seems nice to me because it’s a good way to level up jobs that has us actually playing the game with others.

Maybe an argument can be made that the good exp from alliance raid spamming also takes healers out of dungeon queues? But a solution to that would be to try having the time:experience ratio for alliance raids spamming to still be good, but just not as good as dungeon spamming.