>
The funny part about this comment is that a Bronzeback's damage output is the exact same now as it was back in Mk2, but apparently a Bronzeback is NOW incapable of killing a shit ton. Maybe it was never as capable as you think.
Incorrect. In Mk2, the Bronzeback was both capable of using headbutts on larger models than it(thus giving it another initial with hard head) but more importantly the change was indirect. With Beat Back no longer allowing you to chain hits, you simply can't get the distance into the models you want like you could before.
Now, if your opponent is nice enough to place his two colossals right next to each other than yes, a BB can still absolutely kill both of them.
Now, with that specific example out of the way, to answer more generally.
First and foremost, you're already one of the dudes who clearly thinks the only way Skorne can win in Mk3 is double turtle, which is a pretty narrow point of view.
So, to whit. Morg1 is not a bad caster. He's hard to play, but he has a ball busting feat and a very acceptable kit.
Morg3 is not a bad caster. He's not a DoA caster, true, but he's not a bad one. He's honestly very on meta too, given that he fucks over almost every double battle engine list, and Skorne/Minions are the only factions that can outright counter the tactic without caster dependent tools.
Naaresh is not a bad caster, especially as a Hordes drop. DoA added everything he could possibly want to the faction.
Xekaar is a bad caster, yes. Though I like to be more specific in the fact that he's a fine caster who just dies far, far too easily. If his feat was tweaked to -3 to attack and damage rolls, he'd be fine.
And given that Legends are a unit you can just throw into something to kill it, I'm not sure what your term general use means. It's not like they're a support unit or do something weird, they're a unit of extremely hard hitting troops that do nothing else.