Sure. Gumping comes from Forrest Gump and refers to how they managed to take new footage of Tom Hanks and put him pretty seemlessly (a surprise at the time) into old footage of John F Kennedy and John Lennon (etc).
Rosencrantz & Guildenstern, on the other hand, is a play (and movie) that takes the characters from Hamlet, and has them on their own adventure, that only passes into and out of the scenes that they are in with Hamlet when it's appropriate to the story.
I'm more suggesting the latter. I wouldn't seriously suggest that you take old footage of, say, Sean Connery Bond and have the other agents pop into the footage... necessarily. It would probably be really difficult to pull off without being goofy (and I don't think that we'd want it goofy). But it would not be totally silly, I don't think, to set a "Double-Oh Agents work Case X" during a particular Bond adventure, one that is talked about and acknowledged as occurring during Case X.
It would solve the obvious question, "Where is Bond during all this?"