at first I wanted to answer with short "no", but after few minutes of head scratching I think there is more to say.
I think that Mockito is pretty complete, and there is nothing I miss there. Mockito gives you total control when mocking a well designed, loosely coupled code (but, as it was discussed in other thread ,it will not help you with mocking of final classes, static methods and such).
There is always room for improvement though! Recently I have found Komarro framework builds upon Mockito, and goes a step further allowing writing tests, which are even less coupled with implementation. Which means, that Mockito - currently number 1 - can be still improved.
Book author: Practical Unit Testing with TestNG and Mockito