One problem I could see happening is top teams having a stranglehold on WL, but that could be counteracted a number of ways such as chem hits for changing out players, reasonable limits on dot's career at 79, or change up the league system to where everyone is in Nat Pro leagues, no more WL, and you have 2 tournaments for championships, similar to NCAA basketball.
1 tournament is for league championship, so 16 teams (4 rounds), and then a World Champion Tournament with all playoff teams, so 32 teams (5 rounds), with trophies for sweet 16, elite 8, and final four appearances and then trophies for 1st-4th place finishers.
I know, this takes up more time than current playoff system allows. This can be made up by extending playoffs into offseason days, having offseason go to day 52 and making preseason just 4 days, having early rounds of tourney occur each day and alternate days by region of bracket, teams will still play every other day this way.
Also, this allows us to do bracket challenges that can be set up just like league survivor (which we should have now for GLB tourney anyway) with flex prizes.
Nat Pro playoffs go to day 40. Day 41-42 round 1 of WL, day 43-44 round 2/sweet 16, day 46 round 3/elite 8, day 48 round 4/final four, day 50 WL championship and 3rd place game. 2 days of offseason, then new season starts.
Those who are out early have advantage over those who are in it late as far as offseason and recruiting go,
Now I know insta-lv 79s is a long shot to happen, likely never will, but if it was done I'd really like to see it be done this way. I think it allows for parity, makes Nat Pro relevant, allows more opportunities for trophies, introduces a new aspect to league survivor that uses the march madness aspects most like with a bracket challenge, etc. etc.