When I play 7 wonders 2p we always play two boards. It makes for a better variant.
I pass X first round while he passes straight across.
second round he passes X across and I would pass straight across.
third round same as first round.
Makes for a much better variety and interesting game.
Yep. It hurts the mind a bit. I added this variant in my fan expansion, 7 Wonders: Empires, and called it "7 Wonders: States". The gimmick for mine was creating partner boards to go with the official boards, such as Alexandria II (Library of Alexandria) or Athens (partner of Olympia).
Still, these photos are very interesting. It looks like a 2-player card game. My wife and I are definitely in!