Congrats! Lots of info here so get reading! Ha! So far as I can tell, the most recent Ascents have their bugs pretty much worked out. There is a software upgrade for the radio system, but you will get an e-mail when your VIN is ready for ti to be updated.
Primary issues discussed are;
1. CVT functionality. Some folks find the operation to be less than ideal. In reality, only a few of the thousands of vehicles have an issue and there is a software fix for those now released.
2. Steering feel is a bit touchy.
3. Throttle is a bit touchy.
4. Various volume levels seem to change on their own.
5. Fuel economy seems to vary. Break-in time should resolve though, so break it in first before getting too concerned.
6. Smoke at start-up.
7. Crappy battery and symptoms like hard start, dead battery.
8. Rear hatch open draws battery power constantly, don't leave it open.
9. Oil level over filled from the factory.
I'm sure others will chime in with more things. For me, I've not experienced anything unusual that either isn't addressed by Subaru or isn't enough of a bother to address.
Cheers!