OK i just tried this again using sal's "turn on your way up" method and it really doesnt save any fuel at all. regardless, from tests before and after, I cant find any place to put a manouver node so it'll give me a straight line from kerbon to another planet. I get that I also have kerbins orbital speed to worry about, but I really dont see how its possible to have the massive amounts of fuel left that you'd need to go straight to another world. Are they ever going to add in things to make it easier to know how to do this? Using 3rd party mods is basically cheating in my book. I really hoped to come back to KSP and get at least a landing on another world, but it still seems that without 3rd party cheats its really not possible