With the amount of homogeneity in jobs, I find it baffling that people can't fit all their job controls into two sets of keybinds and four hud layouts.

Could we do with a third set of keybinds and an extra hud layout or two for convenience? Yes, absolutely. Do we need an unlimited number of each? No.

If your control scheme for each job is so unique that it needs a completely different keyboard and monitor for each job, I have to wonder why you're not making parallel keybind and UI decisions for the jobs based on their many similarities. At worst, the jobs can be grouped into three UI families:
  • Healers
  • BLM, SMN, BRD, DNC
  • Everyone else

No, there isn't an exact 1:1:...:1 association between all the actions for every job in each group, but there are enough similarities that if you can't line up all the obvious matches and then fit the rest of your actions into the remaining keys, I have to ask...are you purposely avoiding mapping similar actions to the same button to make everything feel more unique? Don't. Things feel samey because they are.