Can Canceling Orbital Motion Improve Rocket Efficiency?

[PeterDonis]

I was suggesting a way to possibly overcome the other problem that was mentioned (somewhat unpredictable in advance gravity wells), by using additional fuel.

In a practical sense, the problem you have is not needing more fuel to deal with unpredictable gravity wells. It's that you need really, really, really, really precise aiming of your trajectory from the start (which is impossible without knowing in advance where all those unpredictable gravity wells are), if you want to have any appreciable chance of passing by the galactic center and coming out all the way to the "outbound close approach" point on the other side.

In any case, this is developing into an open-ended series of questions on your part, not a well-defined question with a well-defined answer. So this thread is closed.