FFXI chat had tabs, general/chat/party/linkshell/combat, and mostly good filtering. You just had to open the log to flip through tabs. That only took hitting [+key] > [enter]. I'm not saying being able to have multiple logs visible at once isn't nice at times, it can be convenient, but only if there's an effective way to make them not be there when they aren't serving a purpose, not by opening up chat config and turning it off then doing it again to turn them back on.