Structures Generation on existing chunks

I would like to have newly added structures generated on old chunks, but to avoid problems only on those on which the player has not built anything, it would be very similar to the system for connecting older terrain with new, which was implemented in 1.18. This feature is very important to me personally because of my world, where I want to experience every new location, but at the same time I am afraid of the increasing file size. I have seen that many players have similar concerns, but even beyond that it would be a great feature that would significantly improve Minecraft!