SCEA doesn't seem to be as stingy as 2K and EA when it comes to the packs and points you get after games, but they were still working on the numbers. This mode has done a total 180 and so it'll take a few years until we get into where they could make some really good money for themselves.
A small example. Taken from how NBA2K15 has throwback Thursday, where you get a throwback card from current players, SCEA can do an throwback MVP day where you could get a chance to pull a Howard '06, Justin Morneau '06, Joey Votto '11 or whoever they choose for that week. Maybe have a weekly pack where its one HOF/MVP player like 2004 Vlad Guerrero or 1999 Chipper Jones.
Point being, the people who dive deep into DD will be the ones willing to spend
extra money if SCEA makes it enticing enough. They have a lot of history on their side to make this mode work. Making more money can only be a good thing for a smaller dev like Sony San Diego.