I main Monk, but my second is Black Mage. My monk is geared much better, sure, but all the same melee feels easier to me. I do more damage and have more mobility. BRD is probably a different story, but casters do absolutely no damage (or healing) if they have to move at all. With Monk I probably miss a few attacks over the course of a fight due to dodging, but a lot of the time it's just attack > move out of the way > attack with no downtime since everything is instant and you're waiting on the GCD anyway. With BLM it's a bunch of interrupting casts and spamming scathe while running to at least do some damage, nevermind losing line of sight if something moves past you. BLM does nice high numbers, but I know I do better damage of MNK through speed and more consistent uptime. It's already balanced pretty nicely. Melee may have to dodge more often, but at almost no cost to their DPS, while ranged dodge perhaps a little less often, but are nearly useless while moving (except BRD).