I would very much like it if there was a way to fill in those ugly pits with dirt or something. You can't raise them or pave over them, they are only a waste of space.
Even if you could raise a clay pit by dropping clay from your inventory in it that would be nice.
Or maybe the clay/lime could regenerate over time(like in real life due to rain)
Please consider it, I hate these pits all over my village.