Another thing to look at is the objective for the particular unit. I read about unit 551; GoHunt indicates they are seeking to reduce elk tag numbers to allow for mule deer. However, the available tags given each year fluctuate up and down. During 4th Rifle, available tags were reduced significantly. I bring this up since this is an example where CPW is trying to reduce elk numbers, but available tags are not immediately consistent with this objective.
I say 'immediately' since game managers control elk herd size mainly through cow tags. Secondly, if you really want to know the answer then add this to your list of questions for the biologist. Sometimes they can flush out the reason why required points fluctuated; whether from updated herd objective, season date changes, or by looking at annual trends in available cow tags.
I have been mulling over a similar question, except it involves Co's 4th Rifle for elk. With 2 points, you can get just about any unit in the state except the Estes Park, Area 10 unit, and the other glory tag units. This season is during Thanksgiving and many of them have terrific harvest success and high public land percentages for such low numbers. I wonder if the season date change from last year to this year is what improved the draw odds. Any ideas or thoughts?? I guess most wives won't let people hunt during Thanksgiving? To me, that sounds like the perfect time to rent a cozy cabin on the edge of the wilderness and smoke a turkey.