Welp, this might be a long shot, but I'm gonna pitch in:
Would it be possible to tweak vanilla structure generation to make it more scarce? Just so the world feel a little less inhabited without getting rid of them entirely. Have yet to find a mod that does such thing.
Plus... I'm afraid I'm in 1.12.2 as well. Though making it exist would already be one hell of a start.
This is a really simple request, i'm currently working on a modpack that uses both Hardcore Darkness (a mod that makes everything dark actually dark) and Hungry Darkness (a mod that makes darkness hurt you gradually). The problem with that combination is if you ever die during night without setting a safe spawn with a bed, you'll just die over and over again until night is over, and that is really frustrating. Since my modpack is all magic themed, i thought about adding an item called "Guidance" that spawns whenever you die and respawn somewhere that's completely dark, and then depletes durability until it eventually breaks (disappears) over a configurable amount of time. My idea is to configure dynamic lights to have it light the way up for you while you hold it.
I've actually started trying to make it on my own, just for the pack, but i have nearly no Java knowledge, so all i managed to do was create the item then hit my head against a wall for a couple of hours. Use it as a basis if you want.