Just posting some mod ideas here since at present I have neither the time nor skills to make them myself, so if anyone decides to make these, link them so I can use them.

Arcanist Evolves to Spellbreaker
-It feels like the Arcanist is...well...kinda useless as it gets outclassed pretty quickly. I think a simple solution would be for the Arcanist to evolve into a Spellbreaker

Recruitable War Hounds and Hunter Spiders
-I just think it would be cool to be able to recruit them somehow other than random chance and Houndmasters

Barbarian Primal Strike Blight to Physical Damage
-This is probably just a me thing but it just makes it difficult for me to properly appreciate my fiery ash and brimstone barbarians when their brutal criticals deal blight damage of all things

Drider Racial Transformation
-Probably a very complex mod, that would work similar to the new Naga transformation

Materium Major Race Transformation
-Materium is the only affinity without an exclusive transformation. Maybe something that gives their units the elemental or construct type could be fun.

No Mount Form Trait
-Also mostly aesthetics because when my legion of winged angels/demons make no use of the wings and just ride horses, I simply wonder why (also I just kinda think the Exemplar would look cooler if it got to be an infantry unit)

Feel free to add your own ideas in the comments or whatever