soft mod

Ok i opened a psx mem card and am soldering holes in the connection sheets and running lines through them on the board.
Then running some components on my bread board. I'm trying to use a spliced usb cable to connect said memory
to my comp. Then get it to a readable and writable state. THEN program a firmware bypass soft mod out of said psx card that
will work on ps2 AND psx. Commence sales in readable/writable state only with usb A to B port. Firmware seperate.
Before I finish going through all this trouble. Still a market for psx and ps2 soft mods?