I also have troubles with how deep the Nova feels and how much the overmold nubs can get in the way. One of the great things about a Nova is the insane glide! I ended up switching to a Dart/Serpent combo. The Serpent is an absolutely fantastic straight driving and upshot disc which is much more comfortable in the hand, but does not have the glide. It resists turn from overtorque and has a very, VERY mild fade, which I love, but it's on the low end in glide. The Dart on the other hand feels great in the hand, has plenty of glide, but get very flippy very quickly. I bag R-Pro Sexton Darts from Supreme Flight and I love them, but they are finesse throwers. They don't power up as well and will flip over if you're not careful on the release angle.
Personally, I find the R-Pro Dart and Fossil Fuel Serpent to cover all the shots I need and fill the role. However, the Nova is a special beast with how insanely straight it is, how it resists turn, has such little fade, and still glides out like a Cadillac with the brakes cut. I've never found anything truly comparable. I've thrown damn near every disc on the market and the closest I've found to a Nova was a DX Zephyr. But even the Zephyr wasn't as torque-resistant. If you want a Nova flight, stick with a Nova. Hope that one day they'll release a Star version. (and push this on social media)