Typing on our 2013 Mac Pro is downright luxurious and I wouldn’t trade it for any super thin anything. Would also pay thousands for an M2 motherboard upgrade. :D
Was thinking the same thing, given thermal envelope improvements made possible by M1/M1X/M2 would be so cool to be able to upgrade my perfectly viable MacBook Pro 2015 with a new logic board. Upgrade cycles are so wasteful.