As far as rate of speed to play, there are many slow down factors in place in the game. I saw that you get up too 2 hours off line accumulation? If this is true, maybe this is one factor that can be extended more to help get further in the game in a little less time. No limit would not work, maybe 3,4,or 5 hours would work?
Yes, the same or even more monies could be collected for Warzone if it was a little more time friendly.