Increasing xp gained by dps classes in leveling dungeons

[Mavrias]

Imagine the clusters weren't available to get from hunts and only through the AIN duties - The players who don't want to/can't play tanks or healers are screwed in their progression because of that.
So you have to offer an alternative to acquire them or else the playerbase gets upset. And, frankly, if there is a other way, the majority will mostly likely pursue that path instead of stepping into the roulette, even if that requires more effort than surviving a dungeon.

You can buy materia with gil from the MB just like you've always been able to do lol. The only thing adding clusters to the roulette has done is slightly lower the prices of materia.