Originally Posted by
Lunavale
That's a pretty substantial change, not "working exactly the same".
The main issue with it was always A) the automation of forming groups (which was presumably removed by the author already) and B) the ability to skip out on using the chat channels entirely.
It was because of B that the addon was such a big problem if it became widely used. If a large number of players weren't posting their groups in the chat channels, then players without the addon would be SoL, breaking the feel of Classic.
And obviously Blizzard isn't going to outright ban the addon entirely (yet, anyways. I could see this changing if it becomes an arms race), they're just going to disable the functions that they feel don't work with Classic and anything else is fair game.