I went looking for the thread where all this has been discussed before, but unfortunatly didn't immediatly find it.
In that thread BB-Mark said it was not against to rules to mutualy agree to TIE. He did not promote it! On contrary, he doesn't realy like it either, but it is not forbidden, and for now will not be forbidden either.
In the end it is your own community who decides for you if they like it or not. If the teams in your league decide they do not like it, the 1 or few teams who do like it will not have much support for their system. If ion your league many teams like it, and you think you can gain advantage with it, go ahead and join in... but as said here in this thread already: don't be amazed if the snake bites you once in a while. ;)
They are not your friends; they dispise you. I am the only one you can count on. Trust me.