I have changed my mind. Ludicrous or not, what's not to like .....While everything you said is on the money, I think the suggestion wasn't to mess with the jump range. It was to magically skip 6 of the 7 jumps and just arrive at your route's destination instantly. Like: If I can route, let me skip to the end.
Edit: That would, of course, also mean that the one-tank-to-Colonia Anaconda would be able to travel there instantly. Which is even more ludicrous.
However, back to reality. If such a jump proposal was enacted, the time to get to the destination would have to still be there, and the player would have to be logged in. And if the OP is against super cruise times, sitting back and waiting whilst the ship jumps to a destination is another non starter.
In some ways, reducing jump/super cruise times is a bit like speed running Sidewinder to Anaconda in a few hours. All those experiences along the way lost.
Steve