Personally I would like to see a change to how houses are constructed.

Right now you buy a plot of land, and then have to fork over another 450k to "build" your house instantly.

Thing is though, I would much rather "build" my house myself. (it's a guy thing maybe, but I would take incredible satisfaction in living in something I built myself)
I have all crafters at 50 and have miner and botanist at 50. I'd much rather do something like gather materials, craft them into building materials, and then build my house with them.
Examples:
  • Carpenter: make lumber and build scaffolding and parts of housing walls
  • Alchemist: make glass for windows
  • Smiths: make nails, hinges, metal reinforcements

Now of course it's hard to match everything with every craft. For example I have no idea where I would match the typical "masonry" for stone houses.