I've made this dish with Penne pasta and macaroni.
If you dont have dried italian herbs, you can use fresh parsley. Use 1-2 tbsp of chopped fresh parsley.
Instead of cream cheese, you can use cream to make sauce creamier. In that case, skip the milk and butter too. You can use around 1/3 - 1/2 cup cream for the above qty.
If you want to make it more wholesome, add cooked chicken or mushroom or broccoli to the sauce and continue the rest of the recipe.
If you prefer a smooth sauce, grind it in a blender or mixie, instead of food processor.
Also, if you want to make it a healthier version, use whole wheat pasta and skip cream cheese and milk and butter. Also add only a handful of grated cheese. However I recommend you to try the recipe as such for the first time :)