Interesting idea, I'll consider it, I do agree the power-ups need some effects, tho. In Level 3 I kinda wanted you to chase down the power-up, but it falls quicker than Rahagon. I'm not sure how chasing power-ups and then killing the monsters would be a large glow up from attacking power-ups and then killing the monsters, since that's not very different, I might say.
I feel like the combat should feel difficult, but dynamic, with everything having a reason to be there.