This is correct, suoercruise is around 40% of the actual game. If you remove it you automate a heck of a lot of the gameplay. Unfortunately supercruise is Elites Achilles heel. Its crap, but it has to be in the game.
That is sort of sad as supercruise is basically this: turn to target, set to 75% throttle, wait, wait, wait... wait, exit supercruise.
What exactly would something to automate this be taking away from the player? The speed is automatically adjusted already if you are at 75% throttle (it is faster if you go to 100% throttle and slow down later, but you needn't do so) - all the player has to do is hit the supercruise button to exit once within 1 Mm. However, as there are no audible warning at appropriate points it makes the player have to stare at the screen to accomplish something a monkey could do (see blue, hit button!) - riveting.
If nothing else, add an audible warning once within 10 Mm - I could at least read a book or something then.
P.S. The parts of supercruise that ARE interesting, i.e., the interdictions, possible objects in the way, these things don't need to be handled by any for of automation - just alert the player (visually and audibly) and let the player deal with it. In fact, interdictions already do both, so just add a audible warning for "collision imminent" and there you go.