Beastmaster: Can it work?

[Exodus-E]

That is, absolutely, how you make it no longer worth making.

I'm in this camp of thought. BLU is fun for a hot minute until you've collected all the spells, but the rest of its content is just not very fun or engaging to me. It's basically a way to put a gimmicky spin on recycling content, and while there is a small community of players who were able to find entertainment in it, I feel there are far more people who are frustrated that they'll (as far as it seems currently) never be able to live out one of their favorite jobs because it's been demoted to a minigame. I just don't want that for anyone else.

You both forgot this bit from my original post:

Otherwise, it'd be "limited" (pun intended) to a select number of creatures, given how "regular" jobs work.

Beastmaster could very well be a "regular" job, but then they'd have to throw its "collectable" aspect out the window (because of the "rigid" structure/learn-set inherent to being a "regular" job).
Unless, of course, you could change its pets aesthetically (not mechanically) through a glamouring system, similar to how SMN's Egi glamour should be working.