> 3. There's no reason a dedicated x86-64 dongle can't be sold for ARM-powered Macs that need to run software that hasn't been ported yet. It would be a spectacular coup if those x86-64 dongles had chips made by AMD but I digress...

Fun suggestion, so I'll bite :-) would a USB-C dongle actually be a speed improvement compared to host dynamic binary translation? Especially since all RAM operations would need to be funneled over I/O...