The problem with the "in-between" is when it's far enough. In magical figths, PLD really lacks mitigation. In physical fights, DRK lacks mitigation. But, either in magical of physical, having Inner Beast so often gives WAR sufficient mitigation to be MT all the time. And when mitigation is "sufficient", anything more quickly becomes a waste.
Yes, a DPS increase is a simple solution, but it bugs me to make all tanks more and more similar. I'd really like some adjustment that really change the strat between each tank.
That's why I suggested something to make WAR manage fights very differently.
When I look at WAR in 2.0 it had absolutely no mitigation, and no permanent healing boost. That was clearly not enough to survive content because of the damage scaling. But maybe it could have worked with only some of the changes from 2.1.