Ok, I don't think a single locked character would do that much. They probably knew that as well.
They just needed a big name to convince the people to buy the season pass.
Granted, if they had shown Dampierre, like in scv, nobody would have cared, and they knew it.
That's the reason why i said they should have handled the thing better, but i don't condemn their choice.
I would have just waited to announce Tira, and published her post-game. Because, like this, she just looks like a pre-order bonus, except she is not -_-