There are stretches of days where the only dungeons I get for Leveling are Dzemael Darkhold and Aurum Vale, and those two are almost never worth the time investment with completely random groups, since wipes are relatively common in them compared to the other choices. I'd like to see individual duties have a specific roulette bonus. This could apply to certain Trials as well, as the time differential between them varies pretty wildly. If Steps and Chrysalis granted a larger bonus than Garuda, people might be more likely to stick around.