After several conversations with Dennis (the author of MiniMig) several optimisations and cost downs to the v1.0 PCB came up.
1) Fix bug in pin mapping.
2) Add voltage regulation.
3) Use a single 27MHz crystal.
4) Use a larger capacity almost pin compatible FPGA.
Several "would be" hardware engineers came out of the woodwork and promised to take the v1.0 schematics and generate a v1.1 but it was all talk.
Dennis has now (supposedly) agreed to make these schematic changes and rework the layout.
I think it will be several months before we hear again about anyone making MiniMig boards.