hi, can you make the houses to be assemblers and also accept transport drones https://mods.factorio.com/mod/Transport_Drones
That looks like a really great mod to have some activity in the city! I'll test it out over the next days, and see if it can be integrated.
Since more people are asking about houses becoming assembling machines, I'm moving that up on the wishlist. I had some higher quality buildings in mind, that may upgrade themselves from assembling machines 1 to 2 and to 3 (and maybe higher tiers in the future).
Do you see any problems with automatic upgrades? They will produce a bit faster, but it shouldn't break existing recipes I think.