I thank you for taking the time reading it.
Well, the main idea of having it's own window is fairly simple(Even though it will be the very same one, just shows 1 of the chats at the time).
When people spazz around in general chat, the whole chat along with all the functions change drastically of what it used to be. Those that like to randomly chat, rp, scream things, and just derping around in the general chat, often have a problem with those that are actually advertising. It's really a competition of who's the best at grabbing everyone elses attention.
If there was a very own chat window for the users in the game that likes to chat, and it has the very same function as general has right now, everyone would be happy. The chats wouldn't cross over eachother, and those that just want to talk more calm in local or see what others have to say on a crowded night without the need of focusing on the chat every millisecond could do so. And those that want to chat with everyone over the map about everything and nothing, have their very own chat window, in which no advertising would plop in the way of their chat.
If the general chatting had it's very own chat window, and the advertising it's very own function the chats would look more clean and easy to read.
There's 6 different chat functions that show up in the same chat at this moment. 6, for one window.