I think if you could come up with a 3 week cycle with a maximum of 2 repeats it would be fine - especially if you could alter some of the standards slightly so they seemed a bit different - it's easy to get stuck in a rut. My main problem is fussy eaters especially DS1 who doesn't really eat potatoes so we tend to have a lot of pasta/rice/noodles or he has them and we have potatoes
Some standards for us:
Mince in gravy - sometimes as Cottage Pie, Sometimes with savoury scones on the top, sometimes with yorkshire puddings, sometimes just with Mash or boiled potatoes on the side.
Mince as Bolognaise or chilli or pasta bake
Burgers
Meatballs, either done with pasta or served with Ikea gravy etc
Lamb steaks - sometimes done spicy or sliced in wraps or just grilled with veg/mushrooms etc
A roast of some description with the left overs used as a stir fry or a stew
Gammon steaks - with fresh pineapple or egg
Pork Chops again either with spices or plain grilled
Rice dishes such as Chicken Jambalaya or special fried rice type with leftover bits or risotto.
Pasta with tomato type sauce, sometimes with sausage or chorizo or something mixed in or carbonara or as macaroni cheese
Chicken/Steak Pie, made with left overs
Fish cakes or Fish and chips or Fish fingers
Omelettes
Chicken drumsticks with spicy coating (usually with noodles)
Curry
Pizza
Toad in the hole
Fajitas
Salad with prawns and home made spicy wedges
If it's a poor week, then corned beef, beans and chips
and loads more that I am struggling to think of - obvs we have veg/side dishes/salad too:)
That's basically things that everyone will eat - sometimes DH and I will have something more unusual that the teens wont eat and they have something else.
It's not that hard to have a bit of variety and predictability at the same time. i.e. you could have Pasta every week but with different types of pasta and different sauces. Mince every week but sometimes as chili, sometimes with yorkshires etc.