This is a prime base for an "upgrade each day" type of wave-based game, worthy of further development for sure.
Viewing post in Ice Fighter (Brackeys 2023.2 game jam) jam comments
Hi! In the past 3 months i did add an upgrade system and progressiveley harder enemies each night, here's the demo if you have the time:
https://naardev.itch.io/ice-fighter-demo
and the steam page: