Could be an option... I'd actually rather see sets that go up faster once they're higher, perhaps like
2,4,6,8,10,12,15,20,25,30,35,40,45,50,60,70,80,90,100,120,140,160,180,200 etc
Just because I've been in quite a few escalating games where the card cashes have gotten to 150+ and the number of armies left on the board means it's not worth taking anyone else out, resulting in stalemate.
Perhaps the slower escalation would be useful in public games or team games, when army counts tend to be lower, and the quicker escalation would be useful in games with players who look to preserve their armies in the earlier rounds.
Just my $0.02 on the matter
