Make villages actually able to sustain themselves!

In bedrock edition, villagers have poor pathfinding and many often won't make it to their homes each night, practically ensuring they are killed by zombies. I've noticed villagers pressing against the walls of their homes from the outside in an attempt to get as close to their bed as possible instead of finding their way inside. It really takes away from the immersion that these are real humans and makes it hard to do cool builds with them knowing that most of them won't survive a single night on hard mode. They also usually only run a few steps from a zombie before stopping until they are hit again, meaning they can't even avoid a walking threat. Their AI could be improved to fix this. In that same vein of village sustainability, is the lore of the iron golems not that they've been around, protecting villages for a long long time, hence the vines? Why then can they not survive more than 2-3 nights on hard mode? I think there's two ways to fix this. Make it how it was before in that mobs of the night are neutral to the iron golem so that they only fight back when attacked, letting the iron golem minimize the damage it takes. This makes sense too, as they wouldn't inherently attack a non-living thing until provoked. Another solution is to let villagers, namely blacksmiths, repair them! If players can do this, why not the villagers who deal in iron bars and relate to the iron golems? I know iron golems can respawn in certain villages but the majority of villages don't qualify