Definitely interested in a working minimig board.
I think it would be good to not rush into this - the sources have just been released, so let's see if we can save some pins on the FPGA for future use (I liked the suggestion to use the larger capacity FPGA that still had pins but had more usable pins available, but I'm sure there are good reasons not to use it). On the other hand we don't want to wait forever and future enhancements can be turned into a new product revision (the second run of boards).
Is the reason for the SRAM so that the design doesn't need a memory controller for SDRAM on the FPGA (which would require a huge bunch of pins)? It would have been nice to have 8MB, but not at the price of the SRAMs.
I'm all in favour of the smaller board, tweaked to have a nano-iTX compatible layout myself.
Could be cool to use the product to try and implement other computer systems too - the Atari ST comes to mind immediately (although it has a slightly higher CPU clock that could prove an issue with the current design) as well as a host of 8-bit computers (with their CPUs implemented on the FPGA). So being able to select which 'system' to load in the beginning would be awesome, if that is possible from the SD card...