Helpful tip: Health bars will only appear above enemies you currently can't kill in one hit. Use this to identify which enemies you will have to hit multiple times. + this comment so everyone can read this!
How about a change to the shop system; instead of having to separately buy each game, you should be able to buy a player instead. You'll have access to that player's best game of each ship. This should allow you to easily switch ships yourself without having to spend tons of money replacing ally ships.
Oh, I remember this game from the time NeoSteam still existed on the same website. Back then, I stopped playing because this game felt too much like it was Pay2Win. Few years later on kongregate, and it seems nothing has changed.