How does a Nin hold threat? --> ...by not having a tank present and slightly outgearing the other dps...

On topic, as much as I wouldn't mind a rogue tank variant, I just don't see why it would be necessary nor why SE would want to develop any leather-armor tank type at this point in job development. I'd like a primarily-evasion tank, sure, but they still have the somewhat-evasive plate and magey-plate and whatnot tanks to go through first, no?

That said, it'd still have to be a far cry from the blink tank of XI... which brings us back to the fundamental conflicts of evasion tanks in general.