In either case, I am not sure I can say I would want people to have to go through Maat with each job either, some jobs, for instance RDM, would become such a pain for people to do that it would kill off the job even more. Also many Maat fights are easy, or really show no real skill at the job even if you win. For instance, THF can use steal to win, but steal has nothing to do with playing THF, WHM survives for 5 minutes, but thats not something WHM normally has to do, they keep others alive, not themselves. WAR, SAM, DRK, they are all basic zerg fights, go in, beat the old man down as fast as you can, and maybe bring a few items along to keep you up.
My point is that SE would have to get much more creative on what a person would have to do to prove themselves, because the Maat fights in general are very poor, fights that are hard have little to do with the job, and more to do with trying to out match Maat using certain tricks. The things you learn from fighting Maat or you use to fight him very often have no real application by the time you hit endgame anyways, same as how experience point parties are with endgame, the relation just is not the same. Its a solo fight, and thats what your asking for, but the endgame content is party, or even alliance content. I do not disagree that something like this would be nice, but in reality they would have to be much more interesting in how they would do the fight for each job, otherwise it will end up like Maat, where its often not even related to how you really play a job.