I'm fine with the spire redesigns, but why do all these have glass roofs‽ You're either going to be illuminating a stone vault, or you're going to be blowing ou

I'm fine with the spire redesigns, but why do all these have glass roofs‽ You're either going to be illuminating a stone vault, or you're going to be blowing out the rose window effect and turning the cathedral into a greenhouse. If you have to be modern than plate the roof with recycled solar cells for that deep blue gem effect.