Hi, thank you for the feedback!
We plan on remaking the feather counter into actual feathers after the game jam, but their placement is still important to consider (thank you so much for bringing that up!). And some indicator of losing life is definitely needed, agreed 100%. The thing about the attacks... you're definitely not just spit balling, it's fair criticism! We also plan on adding a diagonal slash and more projectiles (spawners in the corners instead of the diagonal slash are also considered), so once the jam is over we will probably have a lot more implemented to flaunt :D
We're glad you enjoyed the game (or rather prototype-kinda game)!