Just build a copy of the Asus UX32VD with full Linux support and I will pay whatever you ask for it!
I would love to just say that the current XPS 13 is the perfect machine for this project, but it just isn't. However the Asus UX32VD is.
The whole hardware-recepie frenzy that's been going on here isn't very productive as you eliminate the posibility to vote and create synergy behind specific features, alas I give in. The reason being that my "unicorn" perfect laptop isn't a figment of imagination but an existing product, proving that it's an attainable combination of hardware right now, let alone come autumn.
Here's what I'm talking about:
+ Matte 1920x1080 IPS display
+ Discrete Nvidia GT620M GPU
+ RAM extendible up to 10GB
+ 3xUSB 3.0 ports (no silly 2.0)
+ SD-card slot
+ Full-size HDMI
+ Openable and user-servicable (not a must, but nice)
There are only two drawbacks:
- Hybrid disk instead of proper SSD
- With 10GB RAM dual-channel r/w is lost
- Problems with Linux driver support
Now I'm very excited about this whole project to fix that last important issue, and were Dell to take the next iteration of the rather mediocre XPS13 up to the level of Asus' Ultrabook entry and launch this project on that I'd be a very happy developer indeed, and gladly pay whatever you ask for this premium OS on premium hardware combination!