Yes, I did mean Kerbin. I get my different kerbs confused. I was going to say "Well, what if the flyover craft is a spaceship in orbit, carrying multiple landers." And then I realized that it is pretty trivial to make sure that whenever something is coming down to Kerbin, I just switch to it and fly it, with everything else just waiting in space until later. Unfortunately, I won't be able to drop three landers rapidly over three nearby points. But, as you explained that's a problem with base KSP, and it really isn't that big of a hassle to drop them one at a time. So problems solved. I don't actually need the feature I was requesting.