I agree.. and I'm not against addons... I love addons ;)
however.. everybody should decide which addons he prefers.. and which he don't like.
Of course someone who continues to pull aggro won't raid with us for long and we recommend to install threatmeter and bosswarnings.
But if someone can play without, why not ?
We farm Illidan for month .. and we never used maintank targets. We set symbols and everybody knows the order they get killed. Those who want targets set ora playertargets for themself.
In order for the Main Tank section of PitBull to show up, the tanks need to be set in oRA or CTRA. If the raid leader sets them in the default Blizzard raid interface PitBull doesn't seem to notice they've been set. Request to have PitBull also show MT window if the MTs are set in the Bliz interface.
that was the "old" behavior.
the problem with that is that the blizzard "maintank" feature is somewhat limited.. so it was changed to use ora/ctra maintanks instead.