If that's not obviously cheating, make it time dependent, make it player dependent, etc.
If that is obviously cheating, what about producing those maps and not providing an in-game overlay?
If a professional team uses data analysis and then teaches their players something like "at 30s, on this map, this player rotates from here to here in 70% of games", that's just good training. If they have this data being live-streamed to their second monitor, it's cheating.
Maybe its just because I play on Sydney servers, but I really find this a bit overblown personally -- and I've ranked up from bronze 2 to plat 1 over six months of playing. I think its honestly just that some people have "on" and "off" games, at least from the hundreds and hundreds of ranked matches I've played.