I'm definitely looking into rebalancing the tool upgrades to feel more like an upgrade, and like you pointed out also look into rebalancing the charged hits (they should currently be 50% faster than just holding LMB)
I'll also make a note to make the furnace toggling mechanic a bit more visible, quite a few people have noted that it's easy to miss.
There likely won't be any direct combat, but there will be various kinds of entities and events which might involve some sort of interactions to beat or escape from. I haven't had a lot of time to put into that yet but that will definitely become more interesting in the future!
The resource protecting thing is a cool idea! Will make a note of that.
Thanks for the feedback!
