Nope. Will sub a month or two a year.
It doesn't come close to offering the programming or value Netflix and Prime does. Both these services are constantly putting out critically acclaimed programming across a variety of genres. When one puts out Dolemite, The King, The Irishman, Marriage Story, The Two Popes, The Witcher, You S2, Stranger Things, When They See Us, Unbelievable, BoJack, The Crown, Mindhunter S2 in the span of a few months and still has shows like Dark, Sex Education, Russian Doll, Titans, Sabrina, Ozark, Black Mirror, Haunting Of etc. coming back around soon plus Prime with stuff like The Boys, The Expanse, Maisel, Fleabag etc getting much better in this regard... well.
The Mandalorian and Imagineering Story are decent but it's basically all that D+ has and they don't compare to the stuff listed above. A catalog is wonderful, and it's impressive... but nostalgia isn't going to keep people subscribed. People want to consume new content when competitors are putting out great shit every month or two.
D+ has Star Wars series, Marvel series, cheap re-makes nobody asked for and non-scripted programming that glosses over the history of their properties.
When they develop some new IP's that compete with the breadth of content other services put out, I'll consider it as a annual sub.