You shouldn't be so dismissive. ;- ) Make it a pre-order item. If you can get x pre-orders, then your willing to make a small batch.
BTW, my ACA-1230/56 is probably the least used ACA-card from it's generation. I really need to finish my projects so i get time for some retro gaming again. I imagine thats what most people do with their ACA-cards, game, and with the new sexy hooks making WHDLoad work as it "should" with lowend CPU's, there is no need for something faster really.
You built it, now the people come for it, so to speak.
Cheers, from Sweden.