I think coaches have been saying all along that this is not the same game we played in Beta, and that changes are being made with no notification. It is difficult to make sense of a game that is fluid and constantly being altered. A little here, a little there. Things that work one season with less talent don't work the next with better talent, and no explanation from the DEVS about what is changing or why or how the game itself is supposed to work.
I think maybe you assumed you understood things more than you did, and eventually you came to the same inevitable realization that many of us already had. Version 3 is flawed, difficult to make sense of, and inconsistent. With that said, I still think it is better than version 2, at least at the division 3 level and when not running the wishbone or playing Colorado and trying to cover Ball... Speaking of Ball, he is off to a stellar start this season! Can he break his own record? lol
I guess it comes down to potential and patience. If you think the new engine has potential and you have the patience to wait for the needed changes to happen for it to reach that potential, it would be worth sticking around. If not, I doubt anyone will blame you for taking a break. At the end of the say, it is just a game.