I also suggested more practical use cases of the Jump in the game on one of @RomoloHero 's topic here.
I said Jump on this topic because you can only suggest 3 features and I had to make a choice but I think that there is surely more possibilites for more mechanically creative plays by modifying slightly the current behavior of the base actions possible in the game now.
Also, I think that generally the game could benefit from more varied combat dynamics and situations than the actual dodge/attack/heal Trinity.
These kind of changes may take some time to be implemented because they require more complex layers of design choices to be made.