So, Quark has its variant chests, and it also has the option to worldgen-replace chests with its own variant chests. While I do like this mod's chest textures more, I feel like worldgen replacement is the one thing that sets Quark above this mod's chests for me now.

I would love to see worldgen replacement with this mod as well, maybe not only with chests, but also with other blocks (lecterns, composters etc.) Maybe replacing tools on mobs and in chests would be possible too?

It would definitely have to wait until those blocks became functional jobsite blocks, otherwise it'd break naturally-generating villages, but I fully support the idea, if feasible to implement.