I think last year they had 4 'sets' for the packs. Couldn't tell you how many different promo packs they'd released.
I would think that being able to use your DD squad offline would wind up bringing more ppl into the fold as far as playing DD. I've got friends who don't even look at DD since they think it's a microtransaction scam...
I personally love DD. I always loved getting packs of cards when I was a kid.... And this is sort of like that ... It's really the only "ultimate team" game I play. (Aside from FIFA, but I'm ignorant to how good certain players are for soccer, so it's based solely on the ratings).
The Show is the only game, I feel, gets it right. I'm not a fan of certain cards I'd like to get make me do something I find nearly impossible, or the fact that some cards are over 50k in stubs (a 50 $ card for a video game doesn't sit well with me, no matter how much I loved Mattingly as a kid).
But they should be looking for more ways to incorporate the DD teams
They took a big step this year with the MtO mode, to which I am addicted and love. It gives me an opportunity to play through a season quickly, and to use teams I normally wouldn't because franchise can take up so much time. Between MtO, DD, and the Moments I think I've definitely gotten my money's worth. I bought the digital deluxe version for 100 bucks... I still have yet to touch playoffs, franchise and another one of the modes. But they definitely packed the game with plenty of content. So even for 100 I don't feel like I got duped into dropping the extra 40 bucks.
Hopefully next year they'll give DD an offline companion mode. And see where it goes from there. I'd really like to see them patch it this year and have the ability to replace one current team with the DD squad you've built into an offline franchise... But I'm still more than happy and excited about this year's release, and for what's coming down the pike.