Bayern obviously have an amazing team, but even their brilliance in Europe is aided by the lack of competition domestically. In England, resting players at the weekend so you can field a rested best XI in the CL can easily lead to defeat. And the margins between the top three are so fine that it can mean the difference between being champions or not. Bayern can (a) afford to drop points domestically because their rivals are so inconsistent, and (b) play weakened teams in the league with much less risk of them losing. The additional strain the competitive PL puts on squads, in terms of rotation necessity and injury, is vastly under appreciated. If Bayern moved to the PL now, with their current squad they would struggle to be competitive for both the title and the CL at the same time. They'd need a bigger squad with more depth in quality.