Everyone on the Twinstar know "World" as their channel. If you name it "Worldwide" you will avoid a problem when Czech player come on the Kronos and write in the "World" channel in czech.
I don't know about others, but to me, anything with "world" in it just evokes some kind of official, or semi-official, global channel. A small international community (~200 online players for each faction if we're extremely lucky) just can't afford to further divide its communication into two such channels. This town ain't big enough for both languages
I'm not saying that Franta can't create his own channel and chat with Honza and Pepa about pivo, hokej and knedlo vepro zelo. I'm just saying it shouldn't be supported, or, God forbid, made official and advertised through system messages.