[Purpose]

If you're scouting teams that you are playing against, one of the most important things would indeed be the defenses they can or cannot cross. Putting defenses in obtrusive annoying positions to slow them down would be optimal. If you're planning on fielding a robot for defense, you should know if the other alliance has a star shooter, and focusing defense on that robot. If you're planning on shooting, take note of any defensive bots, and their mechanisms to disturb your shots.

If you're scouting teams that would work well in an alliance with you, many more factors become important. You should look for teams that can do the things that you cannot do, and ones that can do it well and efficiently. Look for teams that can cross obstacles that you cannot. If you're a high shooter, maybe look for a solid defense bot, and vice versa.