The Church never was a regiment of soldiers, or even of Jesuits marching in step, if it is faithful to Christ it is by nature diverse. To paraphrase St Paul: there are many gifts but only one giver.
The Church is a big tent as Benedict appreciated, he had a long difference with Cardinal Kasper but still kept him place, Benedict appointed non-Benedictines, recognising that this meant a healthy Church.
The dismissal and replacement of Cardinal Mueller represents a narrowing of the curial tent.
I rather admired Mueller's interpretation of Amoris Laetitia - whist Cardinal Burke, and others, were 'bigging-up' the document as a possible significant departure from Catholic believe, Mueller was quietly signifying: this is not that important, it can only be interpreted in the light of the Tradition. In effect he was saying if we interpret it as Catholics it will, like many papal documents, disappear quickly from the Church's memory.
Now Mueller is no longer in the Papal tent, though it is not his temperament to criticise directly, he is is in Fr Z's phrase, "off the leash", with time and at his relatively young age with the energy to teach and write and do what all Cardinals do, lobby for the next Conclave.
Papal tents by their nature get smaller and smaller and with the Pope's statement to Mueller about Prefects of dicasteries being limited to five years this one is going to get wetter. I am sure one of the factors in Benedict's resignation was the thefts from his desk, and obvious lack of confidentiality that surrounded his office. His tent had shrunk considerably only to those who occupied the Apostolic Appartments with him, and even those couldn't be trusted fully. In effect his tent was reduced to him and Archbishop Ganswein. With JPII he had seen the damaging effect of a Pope literally unable to communicate to anyone and therefore unable to govern. JPII was totally dependant on Archbishop Stanisław Dziwisz who interpreted the Church to him and him to everyone else, when his speech had gone Dziwisz was the only one who understand him.
Pope Francis like most autocrats surrounds himself with men who will not oppose him, the more he does it means that more and more are outside the tent, which does bode well for his legacy or his succession.