I always considered destroying it and killing Branka a pretty easy choice because of all this. Dwarven society is jacked up the wazoo as it is. I wouldn't want nutcases like Branka with that damn anvil jacking it up even more.
Hence why I loath the lack of an option to persuade Caridin of it's need in the dwarven people's dire hour.
Despite all of it's inherent problems, I can see an argument for preserving the Anvil due to the crisis of the empire and the endless war that they're losing against the darkspawn. For that reason, I actually sided with Branka in my latest playthrough without condoning anything that she had done.
It still felt like a punch to the gut.
It was a difficult choice for my character after he heard from Caridin, read Caridin's journal and saw everything that Branka had done to her house (again 2 houses in one). Yet, he also read many accounts from soldiers, shaperates and etc about how the dwarves had been fighting the darkspawn for hundreds of years and were steadily losing. He also saw the halls of the Deep Roads and thaigs, great and small, overrun with darkspawn and other fell creatures. He saw the great hall of Bownammar now used as a breeding ground for Broodmothers and then he saw Caridin isolated behind all of it, withholding the Anvil from his people and sitting back to watch them die because of his own personal consciousness.
Would Caridin still be as insistent on withholding the Anvil if he saw the state of his people? If he saw just how far the darkspawn had encroached? That only two thaigs were left?
Also one must consider that after the dwarf kingdoms are destroyed, nothing will stop the darkspawn from instinctively surging onto the surface without an Archdemon to lead them. Then what? Preserving the Anvil could not only potentially help the dwarves despite it's costs, but it could also serve as another effective means of fighting the darkspawn and ebbing their spread.
I'd just rather trust a persuaded and experienced Caridin with it than crazy, obsessed and traitorous Branka. But I guess that's the inherent design of the dilemna right? You won't always have solutions to situations that are ethically pleasing blah, blah, blah? It would work here except that there is a very logical and ethical solution within hairs-length if it were only implemented. Nothing suggests that Caridin cannot be persuaded to preserve the Anvil except for his insistence. But since Branka can be persuaded to destroy the Anvil despite her obsession, why can't Caridin be persuaded to see the greater picture?