I have an Impreza, 2012, so like the Crosstrek, just lower.
CVT: I don't mind it. It works. Like, it's not especially sporty, but it's not a sporty car.
Fuel economy: I average about 30mpg. Crosstrek might be a bit worse as it's higher, but still excellent for an AWD vehicle.
Power: yeah not too much of this. Not really a problem though, unless trying to pass someone or accelerate super fast. It's slow, but not too bad. Better than my old 2006 RAV4.
Overall,I like the car. Good fuel economy, not bad to drive, AWD for snow and stuff. Comfortable too.