The main thing Mechjeb helps me with are transfer windows. It's not fun at all to try to guess when you're supposed to launch based on Jool's location in it's orbit.
I always get my rockets into orbit on my own before I use ascent guidance, but I do admit that I pretty much allow mechjeb to make all my maneuver nodes so I don't waste that precious Delta-V.
I always get my rockets into orbit on my own before I use ascent guidance, but I do admit that I pretty much allow mechjeb to make all my maneuver nodes so I don't waste that precious Delta-V.