no such luck indeed. the reason I like to have more saves is that if I need to go back to an earlier point to try a different choice/gamepath, I can just load up a save right before that spot, so I don't have to play the game from the beginning again.
example, I lost 4 people in the ME2 suicide mission and I'd have liked to have most of them in ME3. evidently that happened because I hadn't completed Zaeed's loyalty mission. well I had, but I chose to save the factory instead of letting it blow up and help Zaeed kill the guy he wanted dead.
and now, to try a different path, I'll have to start ME2 from the beginning. plus to try a couple tweaks with the Gibbed editor. but if I had saved up properly before Zaeed's mission, I wouldn't need to. that's why I became a save freak in ME3.
As a side note, you can save the factory and let the the guy Zaeed is after get away, and still gain his loyalty. You just need to pick the right options (I went full Paragon, so all blue, but I dunno if you can go Renegade and get the same outcome), and use the interrupts.