I did use the new 2017 MBP for few months as my trusty, old type 2016 MBPr developed keyboard/trackpad connector issue after 2 years of constant use. The company I work for had to pay for changing the upper part of MBPr just because of that connector issue which rendered keyboard and trackpad completely broken.

After I got back to the old type keyboard, it feels a lot more mushy, has longer traveling distances, feels bulkier but is quieter.

The 2017 MBP has issues with dust and bread crumbs but otherwise it felt better after getting used to it and getting back to the old felt awkward. A little bit same the same with the Magic Touchbar and getting back to normal function key row.

Also the old MBPr feels heavy and awkward (but more robust built) compared to the new one, which is a lot more easier to carry aroung and pick up from a bag, but the robustness doesn't protect from stupid connector issues which may render the keyboard and trackpad useless...

I feel divided about the connector issue now that I got USB-C to USB-C and USB-C to USB-A cables + the mandatory USB-C hub with ethernet, memory card reader, HDMI and USB A ports. It's cool to be able to plug USB-A cables directly but then I miss the versatility of USB-C and the ease of having bunch of same connectors around the laptop and without minding what port to use with charger. On the other hand I miss the Magsafe 2 charging port which is a lot more robust as a connector compared to USB-C. The connector issue will fade away when the external devices you're using are getting USB-C ports as well. The connector issue is kind of "iMac supports only USB and Firewire instead of SCSI, LocalTalk, ADB etc) but these transition periods are annoying and frustrating.