I would love to buy a computer that is a modern upgrade of the Commodore 64, as if the machine had continued to evolve. In other words, the CPU would be a say 3

I would love to buy a computer that is a modern upgrade of the Commodore 64, as if the machine had continued to evolve. In other words, the CPU would be a say 32 bit evolution of the original CPU with obvious changes to the instruction set as found in the C64. The memory space would be flat 32 bit addressable up to a gigabyte. The sound and video hardware would work in a similarly simplistic way as the original C64 did. But the CPU would have similar performance to a modern CPU. It would also have a modern (size) hard drive. The whole thing could be done as an emulator. But the important thing would be performance. The virtual machine would have to convert one assembly language to the other by compiling it on the fly, e.g. to say x86 code, and not by interpreting it slowly! And of course the thing would have ROM BASIC built in and/or a simple Amiga style classic look and feel OS. At the very least I'd buy one of these machines, especially if you put it in a C64 keyboard style box.