Hi Sike,
I installed the new version today and have been playing around with it. Great work on the update. Lots of nice features! This post is entirely about the multiplayer variant since that's all I've tested so far.
While I love the idea of building my own modular board, I can't help but go crazy that I can't see the zone backgrounds and arena boarders. My cards just feel lost and it takes me out of the game. I was thinking if we added a basic pure black card that's the size of a normal zone (~8"X7.5") we can quickly throw down the amount of zones we'd need. To make zones larger in case of a large battle we could just throw two zones right next to each other or slightly overlay it if we only need a third of it, for example.
This would also completely eliminate the need of a zone intersection tile since you could just leave a tiny space / line between zones and the natural yellow background would serve well to differentiate different zones.
My only concern with this approach is how easy it may be to accidentally drag a black background card instead of a playing card. Is there a way to lock cards after they've been placed? If so, then I feel this would be the most ideal solution.