Needs a new name due to rampant misuse. Well, less misuse and more something differentiating it from subtrope Player-Preferred Pattern. A ridiculous amount of the entries on CGS are PPP, to the point that the page image is actually of PPP.
The issue I think stems from the fact that the names seem like they're referring to the same thing. I'm not sure if CGS should be broadened, or if PPP should be narrowed, but as-is there's a lot of misuse and I am not surprised given the names.
I'm all for merging.
CGS has more than twice as many wicks as PPP and AAA combined, though. Still not THAT many (212), but if it affects our decision on which one to keep, well, just saying. Honestly, they're both good names that can functionally be used interchangeably. PPP has the alliteration, but CGS has a nice clinical feel and is more widespread.
Regardless of the name, I think the image for CGS should be used.
Another thing is that I often see CGS used to mean "Player uses the same move/tactic over and over" (like spamming a Game-Breaker), but that definition isn't clearly in the description. I mean, it's covered by "players prefer certain techniques" but for such common use it should get... a bit more description, I think.
Any media with game-like qualities would work for a game-specific trope, as long as said game-like qualities are relevant for the trope. A trope about a type of choice in games would allow for any media with choices of that nature. The question is, if the choice is made in a non-game environment, does it cease to be the trope? I mean, is always buying the same toothpaste despite the myraid available options still the trope? (And why?)
A game trope parodied in a non-game is still a game trope in a non-game media. And stories about games can also fit a lot of game-specific tropes.
Yes, that's why I call it a "mostly" gaming trope instead of an "exclusively" gaming trope. The Duck is quite correct that it can have examples from other media, even if most of the examples will be from video gaming.
...but that does mean that since (1) CGS is mostly a gaming trope, and (2) PPP is the "gaming" subtroppe of CGS, PPP is actually the exact same thing as CGS.
I think Abridged Arena Array can remain as a subtrope, since it's rather well-defined what it means, and it is a notable variant of the supertrope. From what I can see there's very little misuse as well. It also differs a little, since it's more of a collective choice than a personal one.
The other two... I don't see a notable difference. Player-Preferred Pattern defines itself as the choice between a few different aspects, which may or may not be equivalent between games. They are character-related choices, though. Except for play style, which is a player-related choice. Which kind of breaks it down.