I' curious if an 80386 + VGA can be implemented on the existing FPGA Replay.
Other CPU:s like MIPS, ARM, SPARC etc.. could also be of interest. Especially to explore software that are designed for platforms that now are quite hard to find.
go browse
http://opencores.org/there is HEAPS of open source cpu cores and chip emulations in verilog/vhdl.
Go browse projects, processors. There is arm cores, sparc cores, z80's, 8086's, 68k etc. LOTS of cool stuff there.