For sure sfx are important. I also was going to add visual feedback of the power push cool down and had plans to add visual fx for bothe power walk and pose, and was going to experiment with a cool down on power walk and make it more like a limited time dash with a cool down. I feel like that would make it more obvious that there are two main abilities, and raise the base walking speed, but take away the forces applied to object when only walking into them.
Making objects pushable/non pushable was harder than I thought lol. The "boss door" logic had me mega confused. (I also haven't touched unity in 2yrs lol)
Tldr: I appreciate your feedback :) thanks for playing and rating!