I don't get what the whole big deal about a sprinting tank is. If you see the tank is sprinting ahead to the next pack, you react by using your own sprint and keeping up. Or are we no longer watching ally buff bars to see what they're doing (eg how much/little mit the tank is using, so you know to use more heal/mit to counteract)?
'Reacting to buff/debuff on ally' seems like the exact 'healer gameplay' that people want more of (eg when they ask for 'more things to use Esuna on'), so why is it so difficult to react to 'oh the tank used sprint here'?