I'm looking heavily into balancing the game for the next version, I agree, right now things are quite shallow and (unfairly) difficult! I'd like to get it to be fair & difficult so the gameplay is a bit more focused on good placement, juking, and still trying hard to smelt metal.
I got some fun ideas from player such as holding mouse to fire the metal as a stream ( rather than a ball ) and when an enemy is destroyed you'll auto collect scrap from them. So it'll make destroying enemies more rewarding, or at least we'll see in testing hahah
Thanks for the feedback! It's really helping me a lot to see everyone's ideas and comments :)