I would love to see hashrate drop for one. Gpu mining at home is basically dead because bitmain and the other big boy companies bullied everyone else out. Give the litle guys a chance for once.
Realistically, even if bitmain where to stop mining, Bitcoin will never be able to be mine with GPU again with the current difficulty, at least, not profitably but someone could do it as a hobby even though they would most likely lose money with electricity expenses.