I think the Dept. will balk at this due to shifting gears so to speak. If this were to be implemented they would have to issue new licenses both at the start of calendar year and again at the start of regulatory following, correct?

Mike, the logical way to do it would be the year it went into effect issue the license on Jan 1st as usual with the stipulation that it expires on June 30th. The next year would be issued on July 1st and expire on June 30th.
But, i'm sure the bureaucracy could figure out something much more complicated.

I will see when the next state-wide meetings are. Will probably need joint boards.

The license is only part of it though. There's also that 25 dollar brown bear tag that expires Dec 31. It's only good if you also have a brown bear permit which expires May 31.
You can buy a hunting/trapping/fishing license all on one piece of paper that expires Dec 31 except the trapping license part of it which expires June 30, and the ptarmigan hunting season ends march 30 unless you are on the north bank of the river in which case it ends Jan 31, but spruce hen season ends March 31 on both sides of the river. You can not shoot a marmot under a hunting license but you can shoot a marmot under a trapping license, and meanwhile you can shoot three black bear if you have a harvest ticket of which you will be given a total of 5 but you can only use 3 of them and from Jan 1 to May 31 you have to salvage all the meat but on June 1 you don't have to salvage the meat but regardless you have 30 days to get the hide or meat to the ADFG to have them sealed provided you can beg someone there into actually sealing them for you.
Your hunting license is only good for waterfowl if you also buy a duck stamp which is only good if the duck has 50 inch antlers or at least one..., or no, wait thats moose, I'm getting confused here.......!