The best reason to not cut corners:
If you didn't get the response you were hoping for, how can you know if it was because your idea was bad vs. you cut corners?
Reaching 95%-ile isn't very impressive because it's not that hard to do. I think this is one of my most ridiculable ideas. It doesn't help that, when stated nakedly, that sounds elitist. But I think it's just the opposite: most people can become (relatively) good at most things.
There is a tension; the longer you remain committed to a single cause of greatness, the more incapable you become of being good enough at everything else.