The Leveling Problem explained.

[Supersnow845]

Having your entire rotation at 50 does run into the MNK problem though where the job gets boring to level because beyond level 60 you are basically just getting small potency changes and buffs you stuff into the burst window anyway

Like BLM’s levelling experience is a mess but at least the class both feels somewhat like a class at level 50 but also feels like a totally different (and actually good class) at level 90

[Lady_Silvermoon]

Having your entire rotation at 50 does run into the MNK problem though where the job gets boring to level because beyond level 60 you are basically just getting small potency changes and buffs you stuff into the burst window anyway

Like BLM’s levelling experience is a mess but at least the class both feels somewhat like a class at level 50 but also feels like a totally different (and actually good class) at level 90

It's funny you feel that way because MNK is one of my favorite classes while BLM was the one and only job I could not stand to play. While all other jobs I would do all my roulettes as that job, I ended up hating BLM so much that I leveled it through PVP and just switched to a different job once I was in. And whenever I complained about how bad it was people assured me "it's good at endgame" and I've seen people recommend buying a skip rather than trying to level a BLM. So what you're stating as a virtue, a lot of the playerbase feels makes the job unplayable at lower levels. You are the first person I've ever met who said they like low level BLM. It feels so awful and unfinished I was looking up guides assuming I was missing something. I'd argue no job in the game suffers from the skill stretch more than BLM, not even single-target Dragoon.