Roof- that's something to negotiate with a new build at least. I'm leaning towards a steel roof, if for nothing else, longevity & insurance discounts.
Walls- I hear you (or better put, I don't want to hear you, I'm looking at insulating interior walls just for that reason.
Indoor plumbing- good point- I'd likely request a pump in the basement to avoid any water issues but have already ruled out quite a number of houses in our search for no reason other than they were in a flood zone and I have no interest in paying for that insurance.
Dirt floors- interesting comment there, up here in the NE part of the country- basements are a thing although I'm noticing in certain areas- they're now being built on a slab with no basement- and not because of concerns with water tables but rather to cut expenses while still charging a premium price.
Regardless- I appreciate your suggestions
@n2ishun
-LD