casino upgrade timing option
i have seen that the timing is set to make the game more realistic but it might be a nice idea to take the instant option that is available for the items inside the casino and make it available for upgrading the casino itself

The next update will include an instant option when building a new casino, but not for the upgrades past that.
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rerepete62 commented
I am not in favour of any "instant" or accelerated casino upgrades that charge CPS as this will cause the CP market to inflate at a faster rate than it currently is.
I would be in favour of this idea if the fee was chips only, as that would remove more total chips from the Goldfire economy.