They're dozens of solutions to your problem that can be fixed by just being lazy be it as a casual or a hardcore. If you want change to happen then how about you be that change. You want players to let you know they are new? Stop kicking new players and teach them fights. Why do you thin knew players have to pipe down? Even if it is a farm. Some content is so old that you only find farm parties anymore. When is the last time you saw a Titan Learning Party? If proof of completion is that important to you then get off your FC chat and jump onto the Lode Stone. (Everything I've said applies to everything in the game. Be it Party/Dutyfinder or crafting out front of the FC mansion.)

No game Dev in there right mind thinks it's a good idea to split up a community even if only by a filter. Because that is what it is, a Community. I gave you three perfect solutions. Feel free to use them. Requests like this only make the divide between casual/hardcore and noobs/veterans even larger.