I have no issues with the spec at all, to me it is just a mental barrier to get over the 2K mark when in my mind I thought I could stay under it. In reality I use mine professionally and the difference is only a couple of hours of work, but for some reason it is a real mental barrier to me.
I'm sure that once I see them, and they become general available and I can clear make up my mind between the 13 and 15 all issues regarding pricing will be forgotten.
I'd say that over $2k I'd at least expect it to do everything I need it to do straight away.
Instead, you have to figure out how to connect to everything you use. Mouse, keyboard, monitors, SD cards, hard drives/thumb drives, printers, audio interfaces, etc etc.
So now you have all these problems to sort out with adapters and cables. Most products aren't even available in USB-C so you can't just go out and buy the new version of all your stuff. You also have no control over what other people will give you and expect you to be able to use (especially true for work purposes). Even if you get all the adapters and such, you have to make sure you always have the right stuff with you.
For north of $2k, it's an expensive mess. Apple's mantra was that stuff just worked, but that couldn't be further from the truth in this case. Buy a new MBP and a new iPhone and you immediately have to solve the connection with another adapter/cable.