Shadowverse

Why does the Mid Sword deck need neutral units? And, in my opinion, Otoshima isn't the most important map right now. I also play sometimes, with one Tsubaki and one Otoshima, and it works pretty well. But control-sword decks seem to be performing poorly lately.
Also, Stormhaven has unexpectedly become good, with the addition of "my new" cards (I've lost to this deck a couple of times - so I started looking for a build). I want to craft at least one Almira, but I'm holding out for now.