I think his management needs to be more prepared and firm but then when they are, people get upset about that too. Maybe it's because he is still fairly new. Plus, Mika seems like a really nice guy. Maybe if he were more curt with his fans?
Yes, the more you give, the more people will start to expect. You're damned if you do, damned if you don't. They try to do something nice and people complain.