Upgrades are on the list for an update, so is some graphic tuning. Hitbox is a little touch because I'm trying to stick with traditional bullet hells where you have a tiny spot on your ship that is vulnerable. Maybe I should make that spot smaller, would probably make the game easier too. Will definitely look into it. Thanks for the feedback!
Thanks for the feedback all :). We are taking your ideas into consideration and will be adding some new features, content and tweaks to make the game better.
I'll see what I can do about adding more color; it is definitely lacking in that department.