Hello,
I have discovered what I believe to be a major graphical glitch that lets one see through walls, remove all trees/doodads/etc. allowing full view inside towers and bunkers across the field in AV inside buildings to see if power-ups are spawned in WSG/AB, etc, and other BGs. Classic, TBC/WprePatch/Wrath Beta all have this issue. I was able to reproduce a mild version on Retail, may be able to get it better if I fooled with it, but haven’t had interest.
I discovered it in AV:
I have also been able to automate this with the addon API.
I make the DejaCharacterStats / DejaClassicStats AddOns, so my good intent in genuine insomuch as maintaining my relatively good, positive public reputation.
Blizzard, feel free to reach out if you need more details 
If this is a known bug I apologize.
Cheers!
-Deja