If I was running buzzerbeater and caring about user retention and the large numbers of users leaving, I think I would be hesitant to implement an arbitrary solution which will effect the majority of users who have all spent years building their teams and players to perform under the assumptions of the current game engine.
There are many other factors that make this solution pretty bad - just think of the time you have to spend for scouting your opponents and - in my opinion the worst mistake - using this feature on mobile devices will be a pain in the ass. Setting proper lineups on a mobile device is the most complicated thing to do in this game.
Größter Knecht aller Zeiten aka His Excellency aka President for Life aka Field Marshal Al Hadji aka Lord of All the Beasts of the Earth and Fishes of the Seas aka aka Conqueror of the Buzzerbeater Empire in Europe in General and Austria in Particular