It isn't really that high? 6 year graduation rate is 80% which is on par with most big state schools, and much better than the average in the US, though lower than other service academies.
Then work your ass off when you’re inside the gate too? The academy does plenty. Lots of people graduate in 4 years. There is no lack of resources available, you just have to want it. There were some people in my class who were never going to be members of Mensa, but they wanted to be at KP and they worked hard to make it through. Once you get above a base level of intelligence, how smart you are is a generally poor predictor of success at KP.
It’s a detrimental red flag to do an MBA immediately following undergrad. That’s not how this works.
I’m in industry. I’m dealing with the mariner shortage every day. I don’t want it solved by making KP less rigorous. KP is hard. It’s stressful. It’s uncomfortable. When a KP resume comes across my desk though, I know that person has survived and is comfortable living in adversity. Keep the bar where it is, plenty of people have cleared it just fine.