Between the new LB rules and the 10% debuff there is no reason not to have a war in party which is a good thing. The next part is ensuring we want them tanking and it looks like the changes help with that. IB is now an excellent ability - for timed big attacks it is superior to rampart due to being able to pop it regularly (hold on to max stacks until the big hit is coming) obviously due to the short duration, against a constant barrage of high damage then rampart can be more useful.
Between that, vengeance, even thrill of battle (can potentially provide the buffer needed for a timed bit hit) it definitely seems lime the war is in a much better tanking place
Only thing I was disappointed with is I thought overpower was having a TP reduction, but maybe I just dreamed that