I would like to see Classes treated as proper, separate "Jobs"

[Alahra]

There's a lot more room for creativity if they had gotten rid of cross-skills altogether

In general I don't see them doing this—part of the reason cross-class skills exist is to encourage people to try and play other classes. Personally I'd rather they expand cross-class skills in some way, rather than removing them.

Rogue actually does offer cross-class skills (Shade Shift, Goad, and Death Blossom), but since none of the existing Jobs have Rogue as a requirement, they don't see see any use. Future jobs may have access to them, though, especially if they move to a point where another job uses Scouting gear—any such job would be more thematically likely to have Rogue as a subclass than others would be.