Would love to see someone design a PLCC or IC Socket that would let you slide one of these in (like those old sockets they had in Macs for optional FPU chips).

I just looked that up and it seems like a nice system (although physically complex/costly to manufacture) [0]. The only FPU-optional Mac I had was a IIsi which had an optional FPU that used the Nubus slot.

0. https://www.worthpoint.com/worthopedia/macintosh-color-class...