Features that need some tweeking.

[File2ish]

Not hitting every point, but yeah. Just quick.

Regarding materia: I don't think weapons would just have empty holes in them where materia goes, I think it's assumed the crafter makes the slot. And if that's not assumed, it needs to be worked in with a specific tool or something. It's one of the few things crafters are needed for, much of the stuff they can make is just for vanity purposes post Praetorium. They put a ton of time and money (for the former: especially if they farm their own mats. And for the latter: If they buy all their mats) into the job, it's only natural that you would compensate them. Besides, 3k isn't that much of a tip. Sure you possibly spent 60k+ on your materia, but it's just compensation for their time and possibly skill/luck (if overmelding), ya?

Dungeon roulette:
The low level dungeons are up to 47, Sastasha to Aurum Vale. You are restricted to level 49 in AV, not 50. So it's not a high level dungeon (because being i60+ in AV would be overkill for the place).

And Retainer Companion:
I would love to have my retainer as a companion, like the adventuring fellows in FFXI and path companion in 1.XX. I mean many of us have ours geared to the teeth, it's only natural we want to fight with them. Only problem is if we get to use our retainers as a companion it would probably make our Chocobo's completely obsolete and utterly useless (unless we get to have both out at the same time, which would be unlikely to happen).