[bradfa]

Well, sure that'd be nice, but it would add quite a lot of cost. High current carrying connectors are not free.

You can buy a nice AMD Ryzen motherboard for like $80 retail (Newegg shows $59 is where new unopened ones start). Normal electronics supply chain and shipping margins means it cost roughly half that to manufacture it. So on a $40 bill of materials and labor cost if you add even just $1 to make something better/modular/whatever then you're adding a significant amount in terms of percentage cost increase.

As much as reducing electronics waste is a worthy goal, the economics of it aren't aligned quite yet in today's world.