Don't follow the logic. Increase difficulty does not mean fewer coins mined.
Short term yes it does. Long term the goal of the formula is for an average rate of 3600 per day. We are at least 25% above that now.
No, increased hashrate means more coins than average.
Difficulty only determines the amount of coins per hasrate.
Increased difficulty however will mean less margin for the miners unless the BTC price rises.