If i could suggest a game mode specifically for BGA, it would be a
best-of-mode, e.g. best of 3 or best of 5.
I am thinking specifically towards arena and especially tournaments, where - given the frequency of ties in this game - you would get very many games decided by (nonsensical) tiebreakers.
A built-in-best-of-mechanism would not totally eliminate this, but could reduce this significantly, and the game is short enough so it could still be played within a reasonable time.