re: Would like some suggestions to improve a pasta recipe..

I can suggest just a few small tweaks. I make this pasta at least once a week most weeks, but without alfredo sauce.

Make sure to let your sausage stick on the bottom a bit, this will give you some color once you put in some veggies. After rendering sausage I put some onions in the pot and then a bit of liquid (beer, broth, water) to deglaze the pan a bit. I then put in serrano and garlic. Once that is cooked down nicely I throw whatever veggies I want in the pot (I often use Kale and mushrooms and sometimes tomatoes). Mix all this together and add some broth and let it cook a bit. Throw in pasta and toss. You could also boil your pasta in chicken broth and make it en brodo style where you reserve the chicken broth after draining paste.

And yes, TL;DR.