Read the OP. Rest I SR thru so pardon me if I missed something....

All joking aside, if I am healer and tank takes off without coordinating a SR (unless I don't care right then), they die. Same with DPS. If I'm tank, I always ask to coordinate. Unless I don't want to, at which point anyone who pulls shall tank what they pull. If I'm DPS, I follow tank's and healers lead as I usually want to SR if I'm DF'ing as a DPS, or don't care if we plod along slow and steady.

Also, if I tank and others take off before me, saying "go" or "SR" without even asking or even saying hi, I usually "/sit" and wait for them to die or come back.

Hold your ground. It's your gaming experience. If you think it's bad or gotten worse now, if they don't increase level cap soon, it will only get much worse.