Thanks for your suggestions!
If I were to do a dungeon crawler, I’d want to fully commit to it and thoroughly study how to design it properly. For now, though, I probably won’t include it in the game, as it would significantly delay the plans for v0.0.4, the development of future 'mons, and require a lot of additional coding and polishing (as you mentioned, it would be quite complicated to implement it nicely).
I already have some exciting ideas and plans for the combat rework in v0.0.4, and I want to try and focus on making that as polished and engaging as possible. Thanks again for your suggestion!