If the turns generation was 1 per hour and the remainder very similar it could work over a longer period. People would be forced to have much much higher UPs, you would need to check the RPG once or twice per day making it a lot more popular (i think most are irritated at how much time this thing needs). Also people not buying mercs till last minute would be gone. Over a longer round they would be left too far behind. ALso make it so no turns are generated until attacks open to stop the attack burst at the start of the round.