I've been eyeing that idea as well. I don't like the button setup 100% though. I'd like something with two rows of 4 buttons, instead of 3, 3, and 2, especially for 4 button neo geo games. I know one of the custom mas joysticks has this setup, but I've had 2 of these with a super nova and, to me, they just didn't feel right. It would have probably helped if i had some type of custom stand, at the perfect height, but that's another story.
I've also read in one of the reviews that the joystick on the x-arcade wasn't as responsive when doing circular motions and such, for games like street fighter 2, where ya do the fire ball and jumping upper cut, etc. I guess you could always buy a better happ joystick and replace it, if the mounting is the same.
The last part I don't particularly care for is the $20 adapters to work on other systems. Fortunately, if you get the ps2 adapter with the system, there are compatible adapters that can be bought elsewhere for the pc , xbox, dreamcast, genesis, pc engine, saturn?, and cube. In fact, I've seen one that works for both xbox and gamecube. I've also got one of those smart joy? adapters for the pc already, and it seems to work great, a little cheap made though. I just wonder if there are any compatibility problems with going from a ps2 adapter on the x-arcade to another third-party adapter.
My original plan, if I built one myself, was to hack my old microsoft sidewinder controller, which had been a great controller for many years but is now kinda worn out from use, and also a third party playstation controller, and use the sidewinder plug for pc, and the playstation one on the ps2 and various other systems, with third party adapters.
My problem is that I'm not that great at working with wood and building boxes etc. I'm mainly an electronics person, and just rough estimating, I'd say it would cost me around $27-$30 for the arcade parts, $20 or so for the wood, another $10-$15+ for a generic ps2 controller/circuit board, ms sidewinder $10-$20 - i already have mine so free for me, wire for soldering all of the connections $5?, sand paper, hole cutters, varnish or custom control panel marquee $8-$30, paint $3?, screws $1?, staples $? (to hold wire in place), etc...... hmm, now buying a prebuilt one is sounding better already lol.
Also, does anyone have any experience with the Arcade MX Double player control panel?