Current State of End-Game Contents - A Blog Post from A Japanese Player

[Okashii]

Take T6 and T7 for example.
If someone gets eaten by mistake, it is not an instant wipe. Its not an instant wipe at a certain amount of stacks either, it depends on your skill and gear.
If someone accidentally sends out voice in the wrong direction and gets a person or two, its not an instant wipe. If it's a healer(s), the tank just has to hold it out for 30 seconds. If it's a melee DPS, just move the boss away. If it's the offtank and adds are coming, the party just has to stop attacking for a while. If someone is stoned where they are and gets shriek, everyone needs to run to the hiding spot (This happened to our party once and we actually made it through in the end).

If thats' what OP wants, then I don't understand OP's point at all then. Because that's the kind of stuff that most of the game is already.