I'll start this out with the proposal, for Player/Wg, then give some explanation.
Proposal- Players who obs themselves should only be able to have vision/obs features of their allies. Not their opponents.
This has kind of perplexed me a bit since day 1. In a game where, let's be honest, integrity isn't one of this communities' best qualities, we let each other see the enemies vision/resources/etc, possibly well before the game is over. I mean, it's kind of just asking people to cheat. Not only that but it really limits your ability to "verbally" help your team (example below). Don't forget we also have tournaments for money.
You can argue streams and other players watching can do the same thing but those can all be reasonably taken away. Players who obs mid-game cannot. Also, just about everyone does this but when you watch at the end, you help your teammate/s out with what you see that they don't see in real time. Now, once you obs yourself, at least on my end, if I say anything, I consciously say things to pards that have nothing to do with what I can see from enemies. (IE- your dk at 3 is ready/peons at 4 stuck/wtf are you doing) I can't say scout this mine or the rest of the map.