Just thought I would put in my two cents, LTE is really not that important, I have Wifi available pretty much everywhere plus if I really need LTE I could always link to my cellphone for LTE service. I really don't want to give AT&T another $10 for the occasional use of LTE.
If I put the important things to me:
1: The screen has to be exceptional
2: A port extender to connect to an external screen and keyboard when available - The extender stays stationary, the V moves
3 - An output for presentation mode, I know the port replication is there on thunderbolt
4 - A swappable hard disk, memory and disk not soldered in, this is for field upgradable capabilities at some time in the future. It would really be nice if the CPU was field upgradable as well so when the V8 of the chip is available, it could be field swapped in
That's it really