Forget IL for dungeon requirements, do this instead.

[Genesiser]

So if you can play one DPS you can play them all? And if you have one geared job, any jobs of a similar type should be allowed in regardless of gear?

Overall this seems like a very flawed idea.

You are right, it should be for each job and each role of that class (although the role part only applies to summoners).

As for the gear part, if you can't beat the boot camp because your gear with one job is lower than the other job, then you need more gear for that job.