If you really like the keyboard, but also like linear switches, you can always buy an old board with complicated green Alps switches, and swap them. [On ebay recently, I’ve seen various green Alps boards for like $60 shipped.] Complicated green Alps are nicer linear switches than MX reds, IMO.
If you want to have fun with keyboard layouts, and you can handle some soldering and simple programming, buy a Teensy 2.0 microcontroller and look at hasu’s tmk_keyboard firmware project, which has a nice ADB-to-USB converter as a sub-project. Or if you just want to plug the thing in and have it work, get one of those Griffin iMate thingies.