I suggest 1 Gold for Daily Log in, this isnt too much like NF1 prevoiusly. One log in = 1 olive, so 200 log in = 1 whole month premium account. Here in NF2, 145 log in = 1 day prem only, i guess asking at least 1 GOLD will not bankrupt your Company. Logging in the game with reward encourage players to play everyday or and rewards will lessen players from leaving the game coz they have something to look up to.