Nikodr: the problem here is not keeping up with bluetooth, the PC will be handling that part of the job. The problem that needs to be solved is getting the input to the game!
actually we might be able to build a special connector that connects the printer-port to the joystick port ! An interrupt routine could contentiously scan the nowind interface for input, send it to the printer-port, and the special connector re-directs the printer-ouput into the joystick input

The joystick needs 4 directional signals (that can be combined into 8 directions) and 2 fire-signals, the printer port has 8 data-out lines, the only problem I see here is; it might not be safe to directly connect the two ports, but a few opto-couplers could solve this problem.

I'm moving right now (from Boxtel to Rosmalen) but as soon as all the msx-stuff is out of the boxes and setup again, i will give it a try