So, the new collaboration event is live. Those knight cards from DT:M... don't really shine in DS: most of the time they got balanced stats (which means they can't really be used for any specific strategy, as compared to specialists/glass cannons) and bad sinergy between passive skill and awake skill... Still it's a lot of easily obtained new cards/memories (they're the same from DT:M but even if you do play Dragon you're unlikely to already have all of these H scenes, especially the UR princesses) and a great starting event for beginners! Overall I'm pretty happy with this event.
On the other side I think the Amagiri cards are actually a bit useful in DT:M... Probably. I'm not so expert in that one.