2. Scopes Effect Bloodhound's Passive Detection Skills
Props to Justin Cook on Twitter for finding this out, as Bloodhound is already one of the most effective starter characters you could pick, but his abilities only get bolstered as the match unfolds.
Centred on tracking other players through walls or just through pieces of evidence denoting a character has passed through an environment, Bloodhound's passive ability means he'll call out the latter markers automatically.
Based on a radius around him, you can extend the sheer amount of the map being covered by equipping better scopes, thereby letting the entire party see where enemy players have been and where they might be going.