More scouts can = better information, but only if you're applying them correctly. Getting scouts to new regions is one way that it could help. Maybe having more cross-checkers would help too (for obvious sample size reasons).
Dalton Pompey might be one example of how extra scouts could help. How many teams were on the high school kid coming out of John Fraser in Mississauga? It was in their own backyard so it's not fair to say that extra scouts helped Toronto identify his tools, but imagine that Miami or some team way down there saw him, liked him, and took him.
Dan Jansen is another cold weather kid. Wisconsin. Some teams just don't have the bodies to scout these places. Why waste a scout in a region where one kid might pop up every year, when you can just park that scout in a motel in Florida that's a 3 hour drive from hundreds of legit prospects?
Cross-checking just helps add a little bit of confidence to tool grades that can be pretty dumb/random/hard to grade. If I was running a scouting department all of my underlings would hate me because I'd be pretty strict about keeping them from sharing any information whatsoever, looking up any statistics, or even watching games together. Important to be blind!