I agree on the fact to do a server for Mexico is perfect, because it can be useful in many ways:
There are better understanding between teams, not all Mexicans speak English well, and is difficult to understand your allies or enemies in chat, like reading the abilities of a new champion.
We are a lot of Mexicans waiting for the support of Riot Games, maybe this also benefit other South American countries such as Argentina, Colombia, Peru, etc ... Why? because maybe in Mexico creating this server, players from these countries gonna join this server and you do not need one for each country, one would suffice. I mention this because I find it a bit unfair that Brazilians obtained one for them, and Latin America cant get one.
Even I say this because a lot of times spend to in the games,some racists are bothering some users who speak Spanish Latin on NA servers, and it's really frustrating to be holding these racists and therefore lose many games, it sounds ridiculous but is true.
Not only would benefit Mexico, also make the South Americans players would get comfortable. Also another point that would help is selling "Riot Points" in Mexico and other countries, as it is difficult to pay by credit card for the commissions of banks and is too expensive.
"Riot Games", we would greatly appreciate your help and your understanding (of course, if they understood everything I wrote) thank you