Well, I don't want to compete with the community here. I want to help support it, and perhaps introduce some new designs which had not been considered before. I think what we have is clearly better than the Poker, HHKB, and FC660. 
That sounds very exciting. I can't wait to see what you guys come out with.
I know most of the discussion has been how it relates to using using mechanical keyboards with laptops and being mobile. I think 60% are popular for travel, but I would argue that they are equally popular for looks as well. Those favoring a more minimal style that was introduced with the Apple BT keyboard that comes standard with all iMacs for example.
Personally, I'm more in the minimalistic camp and don't travel with a mechanical because I use a laptop. However, should I ever switch to an iPad, that would be a different story. I would more than likely use my iPad much like wife does. She uses the Apple BT keyboard with her iPad all the time.
With the mobile space in focus, then one of the key deciding factors would be wireless. No one wants to have to lug around a cable or have to buy the camera connection kit if they don't have to. The mobile space is ripe for a quality travel keyboard like you're hinting at.
As for me personally, I have found that I really enjoy having a 60% in a heavy aluminum case. This is probably the exact opposite of where you're going and I don't think that I'm the target demographic, so consider these thoughts heavily salted.
I just found it interesting how much I preferred the solid typing experience of using a Poker X in the Hammer 60% case after typing on a Poker X in the MKC 60% for the past two days. The feel is remarkably different and as an early adopter/enthusiast, I'm also someone that would pay extra for said heavy aluminum case.
If you guys deliver a kick ass travel keyboard, I think you'll have a winner on your hands. And who knows, there might be an aftermarket for 3rd party cases and the like for those of us outliers.
