Awesome work, Max! I've been trying this out the last few days, and I have some feedback for you guys but I'm worried about it coming across as feature requests this early in the process (let's say... usability impressions? ^_^)
I like the tabbed playfields, it would be nice if allied players defaulted to your own bottom half and enemy players are displayed as tabs on the top playfield.
Since all AI opponents now have names, it would be really helpful if their play order preceded their name on their tab (for instance, "(3) Tabitha",) or if their tabs were sorted by table position.
It would be great if we got tabs for other players' hands down in the hand pane at some point. This would be another economical way to show play order, and I kinda miss seeing my opponent's cardbacks (or hands, if I'm
Glasses of Urza'ing it up.) I know this is unlikely, but if this ever happens it would be nifty to have a representation of decks in the hand pane as well (maybe the furthest left slot?) This would make for quick targeting of libraries and solve the snaggle of cards like
Field of Dreams having up to eight lines of "top card" in the card info window.
Anyway, well done, this is really exciting!