Sorry in advance but I'm crashing the man cave.
The noodles you speak of are pretty decent though I pretty much only eat the angel hair version. They make fettuccini but I don't find it as palatable. I really only like to use these for asian style dishes - they kinda freak me out with tomato based sauces.
I am unsure what vegetables you can have on Ideal Protein but if you can have squash, you might try using spaghetti squash for a noodle replacement. My husband and three year old love this with a homemade no sugar added marinara sauce with turkey, onions and peppers.