Really neat concept! i love the perspective of the gameplay. I think one of the things you should do is consider making the cameras edges bound to the puck. That way you will always see the puck in view. You can then zoom the cameras further out to capture the whole view better. Would make guiding your self a bit easier.

This works pretty well! I would add an arrow to show which player you're currently controlling. Nice!

Very cool! I think you should seriously consider something like kangaree's idea.

This is so cool!

Hear me out- you could make a Slime hockey with this engine (like Slime volleyball or basketball).