I love my Coleman Road Trip Grill....hamburgers, sausage, chicken, pork chops, steak, pancakes, eggs, grilled cheese (It has a griddle, grates and pot grate.). Anything quick and simple that goes on the grill.
I also like my toaster oven for Chicken Kiev, Cordon Bleu or Brocolli Cheese (purchased at Sam's), baked potatoes, bagels, frozen waffles (for the kiddo's), etc.
My crock pot sees pot roast, pre-cut carrots and potatoes covered in Spicy V8. Boneless pork roast with cranberry sauce and sugar. Boneless chicken pieces w/ barbie sauce (as my 2 yo dd says). Country ribs (boneless pork ribs) with sauer kraut.
I can, so I often have a jar of homemade spaghetti sauce, salsa, fruit.
The vacuum pack idea is a good one, although I would do it only if I made twice the recipe to save the 'leftovers'. I wouldn't have time to pre-make those dinners for the sole purpose of bringing them camping!
Another thought...try and remember back to previous trips. After a long day seeing the sights what kind of food did you want to come back to? Bring your personal comfort foods...nothing that will hold you back the next day due to upset stomach or that too full feeling.