Ah so i guessed right it is for an investment / ASIC implementation point of view. Cool! It makes sense to have everything on a single FPGA including the CPU, in addition to the reasons you give, why bother going over an external bus to the CPU when it can be right there on chip. As well as needing less board space for two chips.
I think that for a commercial product you're obviously going in the right direction. Though i'm thinking that i'll probably buy one of your Clone-A's to have in my living room hooked upto the big TV and loaded with most of my games.
I'll then have the MiniMig for the tinkering, hacking and learning VHDL / Verilog stuff.
Thanks for replying Jens.