Unit 6 is already open to general tags and has been for a few years.I hold a completely opposite view of what you think would happen on all four of your points. So much so, that i will not even argue them with you.
So in review the land between the two largest cities in the state has a significant overpopulation of elk, is more than half privately owned couldnt benefit from more tags going to people who live and work on those very same properties...ok
Talk to the biologists, they'll tell you they aren't killing any more elk now than when it was LQ. Unless you can get access on Samuelson's to get at those harbored elk, 8 million tags aren't going to change a thing.
Same thing in the rest of the Laramie Range, several large ranches allow very little if any access.
In contrast, the general areas in SE Wyoming, that have high amounts of public land...they can reduce those herds quickly by allowing cow elk hunting on general tags and/or issuing additional type-6 tags.
In the general area I hunt, the herd was at 12K elk and it took about 3 years of expanded opportunity to decrease it to 8K.
Its all about the access, good access and you can control elk. Limited access, throw all the tags you want at it, nothing changes.