Defeating Copperhead in Arkham Origins

The Environment Analysis is used to interact with some game objects, mainly giving further commentary about them and marking them on the map.

• Anarchy's Symbols: Will acknowledge them as found and play comentary
• Cyrus Pinkney Plaques: Will acknowledge them as found and play comentary
• Datapacks: Place a marker on the map
• In Crime Scene Mode: Interact with clues, advance scene

That's basically what you and User Nolonar mentioned. Just summarized it in an answer. I don't know of any further use. Feel free to edit this if you find more uses.

You need to be outside in an open area and not in the middle of an encounter (a fight), otherwise all unlocked Batwing Drop Points will be greyed out and unavailable. I've found that you can initiate the fast travel under almost all circumstances (running, grappling, gliding, etc.).