Do whatever works for you. I would never put any added sugar or sweetener into meat dishes myself and I don’t like herbs (I do use some in certain dishes but not in sausages). I do use a lot of paprika but I am a Hungarian, of course I do. I have my own sausage/meatball spice mix (paprika, salt, black pepper, garlic and onion powder), I only use that and pork. I usually make patties (I have no tool to fill the intestine though I have some, it’s salted and doesn’t go bad easily, maybe I will use some again for fun) but it’s very rare for me to make sausages, I just make meatballs instead. It’s about the same but I put a yolk into it and some leftover soft fatty pork skin, it does good to the flavor!
I do buy sausages but they are very fatty, I don’t normally need that (good for fat fast days though). And I tend to prefer making my own things anyway, this way I have control over what goes into my food and if my tastes change or if I want the spices different, I can do it.
I used to like thyme in my vegetarian dishes… At some point it disappeared from my cooking (probably around the time when I added meat and removed most plants. I barely use any spices since, with some exception: stews, sausage, meatballs, very lean meat marinated in cream and garlic powder… even my scrambled eggs don’t need extra spices only some bacon or similar stuff). I can’t imagine what I could use thyme now.
Once I had homemade sausage (it wasn’t made by me) from home-raised pig. It probably was quite tasty below the INSANE amount of rosemary… I only could taste rosemary. If you are as sensitive as I, using too much (or any) herbs is a bad idea.
Good luck! It’s a very easy dish (if you make patties. once I have bought salted intestine but it’s a chore without a tool and why bother, really…), with some experimenting you surely will find what spices work for you!