After the match with Leipzig I can say that Bayern does not feel the absence of Müller yet, their midfield and attacking line have shown that they are capable of scoring a lot even against a strong opponent.
That is why football is all about team effort, with ability to cover up when a player is not available or for the sake of injury, makes the team balanced. Muller was a valuable asset to Bayern, there are younger talents rising to fill those gaps, teams will always survive with or without any player. Just like how we miss Messi at Barcelona but we see a new generation of talent emerging and are doing the same for the club. Musiala should be the successor to Muller, but recent injury has kept him away from the pitch, speedy recovery to the player.