Multiply to 100 or 1000 every resource incoming/hour and also the standart ppa, spell/op time and damage and leave the costs to the present one. This will strongly weight on promoting the game and enlarge the player base. You could modify those numbers if not for a whole age then for a week or two. It will surelly draw some more interest to this game, both from those that play already and for those that will join during than period.