"Nothing but a usb type c connectivity"No, not at all. I think MacBook Pro buyers today should buy the "old" Retina model, and they will be very disappointed using a MacBook which offers nothing but USB Type-C connectivity.
benchmarks show
Better CPU than 2015 baseline
Better GPU than 2015 Baseline
Better Screen than 2015 Baseline
Better Speakers than 2015 baseline
Better SSD than 2015 baseline
Actually better Battery Performance (at least on web surfing test) than 2015 Baseline
And both costs the same (If you buy the 2015 baseline with 256 GB SSD, the standard for the 2016 Model).
So No, its offering a lot more
Though yes, 2015 baseline has better ports, and if one can find it refurbed (unluckily for me, apple does not do Refurbed Macbook's in Netherlands), 2015 is a very solid option. Brand New, depends, what is more important to you. If ports are essential and you cannot live with hubs, go for 2015, else 2016 offer better value