There is one positive to Revelation has over the other two routes. Almost all of the characters are available to you on one save, making Revelation the best Fates for character building. If you want to play Fire Emblem themed Disgaea, Revelation is the game for you.
The map gimmicks were a nice idea but in practice they suck and only serve to slow you down. Revelation introduces plot holes to the other two routes. The recruits are sprinkled throughout the game with no regard to their joining level, leading to your most recent units being totally useless. And worst of all Scarlet dies in this route too.