If you are running 75-80 mpw and posting state leading/ potential nationally ranking marks college coaches will certainly like that -throwing more volume at people is indeed a simple way for collegiate coaches to get big improvements out of there guys, but the smart ones have plenty of other ways to get you better, and if you're already pretty good they don't have to overhaul what you're doing. Plus you will have proven some durability and determination which otherwise can be difficult to predict.
On the flip side, if you bump your mileage significantly and still aren't running much faster than 16:00 for a 5k, many of those smart coaches are going to very justifiably avoid you -high mileage mediocre runners are pretty difficult to get improvement out of.
My personal story: maxed out around 50-55 mpw in high school, ran decent times, got a small scholarship to a power-5 school, by my junior year of college I had doubled my max high school mph (among increases in many other areas of training), improved a lot, and had that small scholarship increased multiple times throughout my career. I've seen a lot of people who ran relatively high volume in high school not do a whole lot in college, because its hard for them to increase anything without getting hurt.
My advice, consider how to get more aerobic bang for your buck with intermediate levels mileage. An 80 mile week might look good on paper, but doing that with 7 days and 5 doubles wont do much for you besides make you tired. Instead of just increasing the totals on the training log, try to increase the aerobic value of your training. Some ideas could be: run a longer long run, ad in a medium long day, see if you can hit 60-65 regularly, see if you can hit the same volume but with 6 days and have a complete rest day. Avoid running with bad biomechanics, and like Jack Daniels says -if you can't explain the purpose of what you're doing, don't do it.