It's East/West. . .NOT Left/Right. . .NOT Grass/Snow

That is correct.

Then I honestly don't understand the confusion with East/West, no matter what faction you are. I mean, if you know you're facing south then you should know that East/West are Left/Right instead of Right/Left. ("You" general, not specific. You, I am sure, have no such problems. )

Maybe some people just need to retake elementary geography.

You are correct, but then reading your post, how is left/right or grass/snow any more difficult?

They ALL work.

I can never remember which is "grass" and which is "snow", so I just don't respond to calls.

I don't know why people can't figure out east / west.

They all work, and I do usually use left/right (based on spawn) because that's the convention for Republic on my server.

However, the issue with Grass/Snow is that if you're at mid and don't remember which is which you have to check visually, which could easily take 2-3 seconds since mid is so enclosed.

But if you know left/right or east/west well enough to not check you map, then you should be more then experienced enough to remember which side grass/snow are.

You don't need to know the map at all to know East/West.

Your minimap is always oriented with North at top so you should be able to know which way to go without having to move to check first. Yes, from mid it's only 2-3 seconds to get somewhere where you can see one side or the other, but it's only maybe .5 seconds to look at your minimap because you can do it from where you are.

Also, I didn't even know "Grass/Snow" until after I hit 50 because nobody uses it on my server. People concentrating on a task tend to automatically filter out extraneous details such as the scenery if it isn't relative to the task at hand. See, for example, this famous selective intelligence test.