I'd go one step further and make unblockable throws unable to be absorbed by armored attacks, this includes universal throws. LBSH, ARMORED attacks cant be THROWN because why?
Yes I get that it's a video game so moving on to the gameplay side of things, I believe grapplers would be much more threatening than they are now, aside from Bane who is more of a tank than anything. In Injustice, Grapplers don't have extra health to combat zoning and take risks, the damage they do are on par with non grapplers, despite being on the slow side as well. Make their grabs scary.