Villagers recognize hazards, have control of terrain and defenses

AI had improved, but I still feel they are still pretty 'dumb'.

A recent game play session demonstrated how they failed to preserve themselves.

I came across a decently sizable village where a wide ravine tore thought the center of the village and every single one simply plummeted to their own death. Not a single one was left, the entire town was vacant.

I could fix it myself, but...

I would like it if villagers had new abilities to recognize hazards, have the ability to mine and build. A snails pace would be fine, but something at least.

The new jobs do give villagers tasks to do, but perhaps a village needs one more profession, or some existing professions could be tasked with repairs and/or enhancements on a varying list of priorities.

One could be adding lighting within the village of places the light level is too low.

Building defenses, buy building fences, or some kind of perimeter to impede aggressors like growing Sweet Berry Bushes around the boundaries of the village. Not impenetrable, but it's something.

Fixing damage done to buildings, be it mob or player griefing.

Unblocking entrances to buildings when the terrain overlaps in to the buildings.

Removing hazards like naturally spawned Cactus inside the village.

Then, covering holes, like pits with fall hazards, particularly ravines. At least covering parts to the point there is no fall hazard that would cause damage.

I think would be quite interesting to see the AI solve those problems and I feel villagers would be capable of.

Of course all this work would stop where villagers don't identify a hazard, or repair. Which could be expedited if a player steps in.