It seems that the CVT does
It seems that the CVT does what Subaru wants it to do in the non-performance models. My 2016 Crosstrek 2.0L/CVT can average 40+MPG per tank. It's only EPA-rated for 32-33 hwy.
I haven't had any issues with the CVT, and at least Subaru uses a chain. That said, it IS boring, although the paddle-shifters are nice to have. Acceleration in a heavy little 2.0L/CVT Crosstrek is glacial, so I would love to see something like a Wilderness or WRX Crosstrek...with a 2.0-2.4T/6spd. Skids and adjustable coilovers could make it ready for rally, offroad, or commute.
Boost is beast at high altitude. Subaru could kick butt with the mountain-loving crowd, and they already produce the parts.