Eh I'm not seeing anything on the hypershunts other than the usual thing of giving a bunch of stuff to turn it on. Otherwise, loot is just the Doritos. I don't see any patrols either, so that may be a Nex feature.
Oh, also, wanted to note, the salvage % doesn't seem to change the larges, only the mediums and the smalls. So I'm not aware of any way to change which larges you get in a given playthrough. Also, you almost always (but not quite always) get at least 1 of each of the 4 smalls in your loot. So you'll almost always get at least 2 (maybe at least 3 depending on the bounty) of each of the smalls in each playthrough. The mediums do vary though so hard to say for those.