Simple mod to allow all resources to be harvested, including luxury and strategic ones. No more wonder or district blocking.
Note: I noticed that the harvest icon still shows up when you move a builder over a tile, in which a currently invisible resources like Niter, Coal, Aluminium, etc. would spawn once you disover the corresponding technology.
So theoretically you could scan your whole own territory for any yet to be discovered resources, if you really wanted to. You won't be able to harvest it though until you've reasearched that technology (since version 1.1).
This only works in your own territory, not neutral one, so no scanning before settling.