Polonius3 youre making a lovely classic dish way too complicated
Actually Polonius' tips (no 1 and 3) are typical for rosól - and they make the soup better. but they aren't essential. roasting an onion gives rosól great flavour and also color so typical for rosól - then u don't need to add vegeta (which in my opinion is 1. unhealthy, 2. in rosól is used only to give the soup some color. I mean - if u add all the lovely veggies and chicken in the pot, salt and pepper it then vegeta isn't neccessary).
Noodles are obvious. in Poland we call the "krajanka" or "nitki".