Ultima will probably never appear, given the fact it was connected directly into the main storyline -
being Ultima Weapon's 'final attack', and the spell Lahabrea used to obliterate the Praetorium after all
, so I don't think players will ever have that spell available to them.
The rest, well, anything is possible once the level cap is raised. Bare in mind though that due to the fact the elemental wheel has been abolished, all spells in the game now are effectively non-elemental despite their names, so there really wouldn't be too much to set any of them apart really other than their animation and potency.