I don't know how to feel about that either.
I don't like the general idea, let's be honest here, I really like the fact that Gold were kind of a safe play because they're gold basically but maybe I'll change my mind, that's something we never tried so it's hard to give a final opinion just yet.
The only big issue imo is about the ballance of the cards, cards with a relevant deploy ability are going to be king (Igni, Coral, Ermion...) and cards that needs to be played early (like Wild boar of the sea, Vabjorn, Triss butt...) are going to be dead.
The biggest issue with that being, imo the most interesting cards to play with are the latest, so virtualy removing them from the game is not something I'm not a fan of...
And if it's confirmed that they can be hit by lock, RIP Cerys, like, Queensguard didn't have much target for lock before, this time is over and now lock is a premium effect against this deck.