I've found more than enough variety in this type of food to keep me happy, but I do bring more than I need, so I can have what I'm in the mood for, and not just what's left on the shelf.
Anything you can just add boiling water to is a quick easy way to stay fed. I like some of the instant potato cup things (sour cream & chive or bacon & honey), instant soups (corn chowder, hot & sour, whatever you like). There are some great Thai noodle things out there (similar to Raman, but much tastier). I just discovered a whole line of ready-to-eat indian food in foil packages (similar in design to MRE's). I like the vegatables in coconut milk and curied potatoes best, but there are lots of them. Just boil it in the package and whip up some minute rice to serve it on and you have pretty fine meal in 5 minutes.
Bringing the contents of a can to a boil is no more work (except for the cleanup).
You can find a lot of good ideas that will work for you by just searching the shelves in the grocery store. (Watch out for the add boiling water and then simmer for 20 minute stuff, though - who wants that kind of time commitment?)
I like to eat fairly well, but I don't like to put a lot of playa time into it.