The first Ratchet and Clank games on PS2 and PS3 didn't have the Insomniac Museum, but that doesn't mean this game can't break tradition, right? H-haha..
The way I see it, is that the frst game ever couldn't have one, because the series had just started, and they were really looking forward to getting on with the second game near the end of the first. On the PS3 I am sure they felt the same way, and pushed it back to ACiT, because a lot of stuff in the ACiT museum was about Tools of Destruction and Quest for Booty as well.
This game however, seems pretty stand-alone, and has an unnecessarily long development time. It would seem like just as good a time as ever to break the tradition.
That makes a lot of sense, actually. I always wondered why they couldn't include a Museum in ToD. Here's hoping to them breaking tradition.
@Animovie
Collecting all the cards seems challenging, yeah. I could see them going for that.