If the landowners really object to anyone's shoulder possibly crossing their land, then I think the state should generously offer to purchase the 2 square feet at the corners for the original per-square-foot purchase price, or just eminent domain that amount.
"Your shoulder entered my airspace" is not trespassing, never has been. I can walk the entirety of your property line hanging my whole arm over your fence, wiggling my leg between each slat, and as long as my repeated cries of "not touching can't get mad" don't meet any local nuisance statute I've broken no law, certainly not trespassing. Don't my my word for it, look at the document published by the Wyoming legislation:
https://wyoleg.gov/InterimCommittee/2019/01-2019060313-01LSOTopicSummaryTrespass.pdf
"General Criminal Trespass To be guilty of criminal trespass, a person must enter or remain on the private property of another either:"
Relevant portion, must enter and remain on the property. This is generally an intentional writing so as not to cover, say, someone who pulls over on the side of the road briefly. Or, as happened to me this weekend, tripping over a fallen branch and falling onto privately held land where there is no fence. By no reasonable reading of this law can you tell me that by stepping over two adjoining corners, or erecting a zipline, or throwing my hunting partner like Gimli the Dwarf, or emplacing briefly a ladder to climb over two fenceposts placed without a fence meets the definition of entering and remaining on someone else's property.
If someone can show me a single case, I'll accept anywhere in the US, where a limb briefly entering someone else's real estate was ruled to be criminal trespass in court I'd be happy to give it a look, but as is this seems to come from the "I have the right to shoot trespassers on sight" school of jurisprudence, which has as much legal standing as a Bugs Bunny cartoon.
With all due respect, horse hockey. If landowners were getting more value for their land because it land-locked publicly owned land, then that value is ill-gotten. I would think that if hunters in this suit can show that sellers are using the idea of otherwise inaccessable public land as a selling point, they'll make the point that right now landowners are illegally profiting off of this. They have no right to sell exclusive access to public land; it's not theirs to sell.
If someone loses property value because they can no longer prevent the public from using public land then justice has been done.
I suppose next we'll be seeing landowners trying to buy up parcels adjoining both sides of the Big Sioux River and trying to charge tolls to for fishermen whos lures touch the riverbed.