I have a funny idea, make the ultimate keyboard. Why do we spend so much just to please the eyes? We are in tactile contact with something that could be stimulating us back. This is where it gets funny. Have anodized aluminum keys, have them contact an environment plate as they descend into the keyboard. Offer stimulating massage (maybe helping reduce carpal tunnel) and forced heating for cold days (small fan blowing heated air or just air for those warmer days, which could be climate controlled from your keyboard loader software). Place a small processing unit in it, with some permanent memory and have it do a little A.I. routine that learns the patterns of your mistakes and corrects them as you type (could even know which user is using it easy enough by which typing speed pattern is detected - everyone thinks and therefore types a little differently, so as you type it will kind of read the speed of your keystrokes and find patterns. It could examine your intent (based on a pattern it will affix by word usage, thereby learning your vocabulary and make it easier to fix misspellings (all the different types of) as you go - wouldn't need to have a TSR software to do it in your business software. It could easily be programmed through the usb port for dictionary upgrades or language changes. It could fix grammar too with clever enough programming. Think of expansion modules for types of businesses. Priced around $300 bucks, it could be the Ferrari(or Mclaren) of keyboards.
Ok, heres the deal. If anyone actually starts making them, I want one free......
..................edit to expand idea....................
Put the massage unit in a gel wrist rest that is attached.