Special chat for premades

Hello, community of League of Legends! I'm sure most of you encountered the following problem: a group of premades, using the in-game chat to communicate; in their own language. However you look at it, it's annoying. I don't even have to go into it, I'm sure everyone reading this knows what I'm talking about. And it's also bad for the other side: whenever I'm playing with my friends and we can't use Skype or TS, we're using the in-game chat, and what makes it annoying is people asking you to speak English, or starting to swear cause you're a "fucking polak"(i'm not, btw).

So, what's my suggestion? As the title suggests, there should be a special chat for premade players( /p?). As someone who's been on both sides, this would be a great addition(not to mention it's so easy to script it).

So, if you want this, upvote the thread so a rioter notices it(notice me senpai). It's something small, but definitely something we need.

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EDIT: I now realise I've posted this on the NA boards. You probably don't have this problem on your server, but it is pretty annoying on EUW and EUNE. So even if you don't emphasise with me, just help me get a rioter hear me out(suggestions get ignored on EU boards anyway).