It doesn't have to be allowed in events and such, also it is a choice for the host to use it. But I personally love to look at duels/2v2s like that very much

And it might be off because theres 500 TSF players usually. Your server would be full of Polish noobs you can't understand in no time.
Oh, they will all ask for/say things like "TEST??????????" "PLEASE?????" "ME JOIN KLANU DM????" "DM JESTES KLAN??" "JAK TAMM????" "CZESC"

Also I do really think this patch should be added to the J2O downloads link, and maybe make this topic Sticky.
It is a really great patch, and thus I think every newb should be able to find it easily