No. That would be no different, practically speaking, from having more Companions and we closed submissions to new Companions several years ago.
But a greatspear wouldn't go with the shield, it'd be 2handed :P
You're not getting elemental martial arts, and there's already plenty of fire and ice (water) and wind (storm) themed powers.
There's planned to be more Geomancy-themed powers in the near-ish future.
It's literally impossible NOT to do so if you pursue the main story quest to its current end point.
Yes, Varena has repeatable content. She also has a personal questline running parallel to the MSQ, the first part of which is already in-game.
Hana is a mtf transwoman. She never asked Keros to switch her genitals, just asked for tits and ass, and lost her extra tails in exchange.
Narratively, she's content as she is.
Realistically, I don't want to write Hana TFs and don't intend to do so.