Very cool suggestions! Have noted everything down. I have something similar to the weakspot idea planned as an unlockable in the future! I'll try to look into controller support for one the next updates as well.
I looked into the crashing issue, and I found a bug that only affects web version, and only when approaching the lighthouse front door after reloading.
Fixed version is up now. If that doesn't sound like the issue you had, please let me know with more details so I can look into it!