Why does it always have to be "non-verbal"? Is it really so hard to put into Party Chat: "hey, I think we can handle more on the next pull"?
Every dungeon I've ever run went fast or slow depending on the tank. I've seen tanks try to speed run even though they had no idea what they were doing and I've seen tanks take it slow even though they could hold all the hate in the world. That's what I mean by the tank sets the pace. A bad tank can set back a run a lot worse than bad DPS.No, you got it backwards here. Tank keeps enemy attention and positions everything so others can do their own jobs comfortably, that's the core of the role. The run's pace is set by the entire party and what they can handle, not tank's desire to either speedrun or skip around and pick flowers. And yes, that also means not AoE pulling when you realize the group isn't up to snuff.
People learn differently. Just because you're fine with someone running ahead and pulling for you doesn't mean everyone is. Personally I watch every tank I follow to see how they do it and every one has a different way of doing things. This whole "let's throw everyone into the deep end and let them figure it out for themselves instead of taking some time to actually teach them" mentality is why I don't even attempt raid content.If you're fine with people doing bare minimum and never learning anything that's your business. I would rather take the chance to teach them something and help them become a better tank. In fact part of learning for me back when I started, was when somebody pulled ahead of me and I realized we could handle that extra pack just fine.
Telling newbies that they're the ones that "set the pace" and "if people don't adjust to you just let them die" or other crap might seem "nice" to you, but in reality is doing them disservice. Sometimes people will want to do things different than you want them, and you can either throw a useless fit or try to adjust and do your job best you can and learn from the experience.