goofierosprey The ability to smelt concrete powders to produce their respective stained glass variant would not only make concrete powder more useful, but would also make a lot of sense. (And yes this idea is from vanilla tweaks)
Wormbo Concrete is made of sand and gravel. Only sand smelts to glass, so it doesn't make quite as much sense as you suggest. Also, data packs are a thing in modded Minecraft, so using VanillaTweaks is a thing you can use with mods as well..
LeoBeliik I dunno, it makes a lot of sense to me, it also lowers use of sand (which is not automatable) and give more use to gravel. Overall I think this is a good idea and fits in quark
Wormbo Does Quark not solve the sand renewability yet? That seems like a much more relevant suggestion, then.