I like the overall design, personally.

It looks more refined than a simple, crude forge & billows setup. This means that it should allow for.. more refined weaponry. However, the concept design I agree looks a little too smooth for Valheim purposes. I'm eager to see how they'll "rough it up" to match the current aesthetic of the game.

It does stand to reason that as time went on, Vikings would discover better, more efficient ways to do things.. as seen with the more complex stations we already have; notably the Artisan Table.