People got crystals, ask for some use for them. People ask for winders.
Devs provide use for crystals, shutters: now we can has better windows.

result:
some people mad anyway.

I like them, you can use them as 'ice' or 'glass' or just hide one in your chimney if you don't like but want + comfort. I'd like to make a whole home out of it, but they are kinda small and resource heavy for that. Even one large wall would be an undertaking.