Suggestion Idea:
I suggest a new option be made available - Battle Readiness. In 'real-life' if a large army stands dormant for a length of time, that army would not as ready for battle as veterans who have recently been on campaign. Therefore there could be a penalty for large, dormant armies and perhaps a bonus for active armies.
Specifics:
If an army of 10 or more armies did not attack in the previous round, it will lose 1 army. On the other hand, if an army did attack the previous round it will gain 1 army.
Why it is needed:
More and more games are reduced to a stalemate where the players with continents just sit back, build up and wait for their opponents to destroy each other before taking advantage and stepping in. This would make for a more dynamic, aggressive and (hopefully) a shorter game.