I would like to suggest the implementation of an (optional) periodic e-mail to keep managers engaged with the game. Progression in Buzzerbeater isn't the fastest as it's a game with great depth and a long-term strategy, so I think it helps user experience to emphasize the progress that is made. I think that many managers don't have a lot of time to spend on buzzerbeater and only log in sporadically, and these users are most easily lost. If we have periodic emails with updates, it will be a trigger to log in again and stay engaged with the game.
My proposal is simple; implement a weekly email with results from games, gameshape/training update, new BB-mail/forum response and draft results and league results in the offseason. I understand e-mail forwarding of BB-mails is currently a supporter feature, but I think these updates will benefit Buzzerbeater by helping retain users.
On a sidenote, my other proposal of the interactive tutorial could be included in these emails as well.