AST mains want:
Varied cards. Period.
Better RNG mitigation
Time elements like Time Dilation back
Nocturnal Sect
None of those need nor require AST to be DPS job. They require SE to actually be C R E A T I V E in how they implement them. See PvP AST for details (and PvP versions of classes in general honestly).
If AST becomes ANYTHING it would be a straight up removal of cards and a rebranding to be Time Mage the healer.
And again, AST could be a regen healer if SE would actually play with the idea.
