For my group, I just ordered the new nonTB 13 inch and an old-style 15 inch MBPro (the one with all the ports).I agree completely! I recently purchased the top of the line (at the time) 2015 MBP and it runs like a beast. And not to beat a dead horse, but I don’t find my need for USB going away anytime soon.
I have to say that the nonTB13 looks silly. In order to connect up to a 24 inch DVI display (that we already had), we are using a USB-C to HDMI adapter, and then a HDMI to DVI adapter. We then have a USB-C to USB adapter plugged into the only other port, and from that the USBC power adapter. It works, but looks silly.
By contrast, the 15 inch MacBook pro still (thankfully) has a couple of regular USB3 ports, and HDMI, and miniDP (using it to connect to a Dell U2711), and MagSafe, and a SD card slot, and is very fast! It is hard to see in what way the newer designs are better (from an end-user perspective). It seems the only case where they are better are if you wish to plug in to 1 or more 4K or 5K displays. While great, I don't think there are many users doing that with them. Whereas I suspect the number of users that still use USB, mDP, SD cards, and HDMI is massive!