Agree. There are little, if any, mechanics that require constant communication between tanks during the fight. Pretty much everything can be sorted out before hand, and things really only go tits up when something bad happens (deaths, bad timing, taunts etc) and you need to recover from it. That is where you really see an experienced tank team shine, but outside of those situations, it is generally taunt at X these days.
If you are thinking about current fights in SOO, for me the real messup possibilities are Siegecrafter (not killing add in time and how to not wipe) and klaxxi between who tanks what, especially if you can't bop off a debuff.