Add a sub-window for WSG.
The new window will allow you to announce incoming enemies or location of the flag based on your current location and allow flag carrier to announce what path they are taking back to base. I've kept all the mouse clicking down to a maximum of 2 clicks per announcement (still much quicker than typing).

Add a second "object" window to be positioned under or beside original window with buttons:

Ramp/Tunnel/Roof/Mid

Operation:

Clicking a number E.g. "3" then one of the location buttons wile defending in your area will output <Number> Incoming <Object> <Location>

E.g. 3 Incoming Ramp Warsong Lumber Mill

Clicking a location (e.g. Ramp) without a number will output "Our Flag is in <Location> <Object>"

E.g. Our Flag: Silverwing Hold Roof

This is useful when locating the flag in the opposing factions base or when you have the flag and want to tell people what area in your base that you are hiding in.

If you are carrying the flag and you click a location "Ramp/Tunnel/Roof/Mid" BG Defender will output "Flag Carrier: Flag incoming <Object>"

E.g. Flag Carrier: I'm incoming via Ramp