Expedition deals limited to level 80 items.

Thats a big deal and makes the mechanic significantly worse than it could be. If you run Ritual on a level 82 map all the things offered to you will be level 82. So i think expedition items should atleast have a chance to be level 81 and 82 after you have done the mechanic on the highest level maps.

Absolutely yes. I have never seen even one useful item in their selection, the only thing expedition is good for is spawning some more monsters for XP and some currency.