To be fair, if they are planning to expand the amount of limited jobs we have then I would appreciate a better term than limited job.
Disciples of Knowledge maybe? To reflect that BLU, and maybe later BST and PUP, are essentially collectathons for various fields of study. Spells, animals and mechanical creations.
If they kept their level caps the same as each other, gave them their own DoK DF, and let them into other old side content like deep dungeons and squads, then I could get on board with the concept.