It would be nice is we all chipped to fund a library of moulds.
I don't need my 10KG mould but once every 2 months or so, and in the mean time it gathers dust. It would be nice if say, Sailor, needed to borrow it, he could just check it out like a book.
I don't think it would work in a practical sense, but the idea of a library of moulds to choose from is intriguing to me.