I'm actually in a different place now that I'm off weight loss. The maintenence book actually gives you a break down of the consume infrequently foods. I think it depends on how you do the infrequently foods. For example I eat regular peanut butter 4-5 times a week, but I'm a food snob and only use the fresh ground from the local organic market. At this point for me R/F grahm crackers are off the infrequent list, they're the one starch that's a major staple now.
As for the protein aspect, I've barely touched beef in over a decade. There's away to vary the protein. I'm constantly munching on the vegertarian options, I incorpoarate nuts and Ricotta Cheese makes an awesome dessert when it''s blended with just about anything.
The Morton's lite is to balance out the potassium that you're not neccessarily getting with a limited diet. 64 ounces of water is not a lot of water, trust me I'm about 116 ounces in so far today. Granted I did 3 floor moves at work, came home jogged for 28 minutes with the dog, then did a 20 minute toning session, I've probably sweated it all out by now.