I would be potentially interested in developing an app for it there are some things holding me back.

• There's no documentation on how to develop for it, that's a big one.
• I refuse to pay that much money for a dev kit
• It's missing vital features like the ability to connect to a bluetooth keyboard without having to go via a MacBook
• It's so expensive that only business users would buy it, and yet its battery is so small that it's no good for business use, so where the hell are my customers going to come from?
• It's only available in the United States again limiting the number of customers that I may potentially have

It just doesn't seem like it's been properly released yet. It's a beta product with beta features and has been released as such except it has a non beta price. And also virtually no developers got early access so there's basically no apps.