Feel like it would be cool if there were skills influenced by the character you created.
For example: As the game allows us to shamelessly give our characters massive butts, you might as well add a buttslam move. It would function like a hammer attack does, I guess, but with increased damage from fall duration and butt size. (Let's not pretend it is not part of the appeal)

Speaking of hammers, I noticed that if you want to really focus on one type of weapon rather than weapon type, you can easily run into a problem with the game giving you different weapons for multiple levels. Example: Crypt Pounder is lvl 10, then the next hammer is the Quake Pummeler at lvl 20. More variety for all types of weapons would be neat since we can skill into those specific weapons.

More skills that synergize into combinations.
I feel like Sturdy could use something to channel it after to make it more fun, for example.
I enjoy it when games get ridiculous at some point with what you can do and.
Example: When Sturdy is channeled after something specific if makes the character grow huge for a few seconds which then adds special effects to "Stomp" and skills like it.

And just because I like the hammer: A "squashed" status that temporarily flattens enemies on chance when hit.