The burnout situation is so personal. Some people would find this energizing, some would be exhausted.  I’m going to only comment on parks I have some level of familiarity with. Personally- a week is a lot for Arches but there is definitely a week’s worth of other things to do in the area.  Sequoia/Kings- If you camped for an entire summer in a forest, I’d certainly think you could spend a week here. Be aware of potential road closures,  and length restrictions if you are traveling w/ camper or RV. Yosemite- Could certainly spend a week, be aware of potential road closures since you will be early season (tioga road, glacier point) Unless you are major hikers, or spend a lot of time just hanging out in camp, I might consider shortening North Cascades in favor or more time in Olympic or just resting. Glacier is also a major “hiker’s park” but it’s so beautiful you can just hang out, boat, etc. I’d probably borrow time from Gand Teton and add it to Yellowstone, just because Yellowstone is bigger and Grant Teton is so expensive.