I was thinking about adding farming in bases, and even safe houses and tents.
My idea is that there would be a number of "fertile ground" tiles and you could put seeds of any plant
there. The amount of fertile ground you get would depend on how expensive is the place. So a tent
would have maybe one (or none) and outpost could have ~40.
Farming would give slower output than gathering stuff in the wasteland, but wouldn't require as much
attention. For example a fruit tree would grow 10 real days, then you just click on it to get 40 fruits,
then it dies (or maybe there could be a few cycles before it dies).
Optionally you could speed up growing by taking care of the plants regularly (like watering them or
adding fertilizer) but it would be never as fast as getting things from unguarded locations. A plant you
don't take care of would grow too, just for example 10 real days instead of 4. Or maybe on how
well you take care of it could result in how many cycles you get before the plant dies.
Spore plants could find some use there too, we could make scenery with "spore plant sapling" that
doesn't really do anything but if you don't clean it on time, after a few days it grows into real one.
It could grow spontaneously next to fertile ground hexes which have some plants. So you wouldn't
be bothered if you don't farm at all. Another idea I had was some kind of mutated poisonous ivy
"enemy scenery" that slowly creeps on ground, starting from hexes next to the plants (if you don't
clean the "ivy sapling") and poisons anyone who walk on it.
Disclaimer: This is just my random ideas not any "official todo"