After hearing and reading about the transition to B2P and ESO+ I felt influenced to make a post addressing my main concern and a possible solution.
What is the incentive to maintain an ESO+ account if a subscriber stands to lose all non-purchased DLC upon canceling the subscription? It would seem that this would put a subscriber in a position where he would need to pay twice for the DLC (by subscription and Crowns) if he thought that he might want to cancel his subscription later should it become apparent that the cost of the subscription outweighed it's benefit.
My personal preference would be to continue paying a subscription (via ESO+) and supporting the development of this game on a monthly basis simply because I enjoy playing it. However, not being able to keep the non-cosmetic DLC if I let my subscription lapse after a year, would be more of an incentive not to subscribe to ESO+. This seems peculiar since a higher subscription rate would be the most beneficial to further developing and maintaining the game. But, I think I have a solution.
The reasoning behind the current plan is to avoid people picking up a one month subscription every time new DLC is going to be released, effectively allowing them to get it at a reduced cost. I would argue that a more incentivizing solution would be: Allow ESO+ subscribers to keep the DLC, but, when new DLC is going to be released suspend the option for new one month subscriptions. This would insure that ZOS would receive at least $30.00 from anyone signing up for a subscription just to get the DLC. You could easily extrapolate this out for larger or more highly anticipated DLC releases. It is my opinion that using this method while allowing subscribers to retain their DLC is a better incentive for more current subscribers to keep their subscriptions when combined with the other planned ESO+ bonuses. It would also be a better incentive for new players to sign up for ESO+.