I think the Touch Bar is very cool, and I can definitely see the long term appeal of integrating touch with the MBP (especially TouchID). I really loved the integration with FCP and PS. However, it is going to be a while before the new technology Apple is introducing, especially USB-C, becomes ubiquitous.
For that reason, I will likely hold onto my maxed out rMBP for as long as possible. I understand the direction they are going, but I think they may have an issue with pushing the envelope too quickly. People are getting tired of needing new dongles with every iteration of the Mac. I'm still using FW800 for a few HDD's.
The only cons that I seriously dislike are the lack of a MagSafe USB-C cord, which would be stupidly simply to implement, especially on laptops that cost $1800+, and the removal of the glowing Mac logo.