I expect jennredd and Britwife to chime in with some brilliant suggestions but I second gershamabob's idea of Italian - you can do lasagne, manicotti, stuffed shells, etc. If you were extremely energetic you could do one meat version of lasagne and one vegetable.
I was also going to say Middle Eastern which sounds a lot like your Greek - pita, hummous, baba ganoush, taramsalata for the fish eaters, olives, feta, falafel.
Without cumin/coriander as you said, you are shut out of the Mexican ideas I'd suggest. But again you could do meat/non-meat versions of fajitas - make your own type? Steak, black beans, fresh tomatoes, lettuce, onions, cheese, sour cream. You could put fresh coriander as an add on for those who want it?
I'm guessing Indian is out? You can do it without cumin/coriander, it's just not as nice. I'd give ideas for that if not.
If you decide just lunches it's a lot easier, like soups/quiches. For dinner I'd probably want to do something a bit more than just that.