I used to have issues with keyboard gaming, too until I bought my TypeMatrix 2030. I haven't been on the forums in a few months, but iirc, the next keyboard was going to basically be a programmable variant of the current 2030, but development was halted due to some change upstream. As far as the 6 key goes, can you perhaps bind delete or backspace to what 6 was to be bound to? I highly doubt that TypeMatrix will ever feature a 6 key on the left hand since actual typing ergonomics are better with it on the right (even if it requires you to rebind certain specific commands for games, I hardly see this as a drawback in its overall design). As far as your number-pad problem goes, my dad owns a cheap USB external number keypad with a matrix-grid layout that I assume would be perfect for your gaming needs. The only "drawback" here is that you'll be using a second USB port when you play your number-pad-philic games. My personal, not unbiased suggestion to you is to buy the TypeMatrix 2030, an external number pad, and then rebind your old 6 key command to backspace.
-k

@kesmikcuz

Thanks for your helpful reply!

@Alternatives

There are no concrete hardware designs in the pipe that are close enough to wait for. The only hardware project that is being thought about currently is a highly portable Bluetooth version of the keyboard - but even if that comes to fruition it would likely be years.

It's unlikely that we'll make any major changes to the position of the 6 in the number row (I know you said number pad, but I'm nearly certain you meant number row). The TypeMatrix does have a built-in number pad using either the function key or the numlock key - although the keys are super-imposed on letters so that may not work perfectly for you. Take a look:
http://typematrix.com/support/user-guide.php?item=21

If anything develops on the hardware front we'll certainly announce it.
Thanks,
-TypeMatrix