It should be said that, as with any design, there are tradeoffs here.
There are lots of advantages to this approach (see the design page),
but there are one or two actions that might require an extra click
with the new design. The primary example of this is switching wifi
networks: with the new design, this will require that you open the
system menu, click on the wi-fi entry, and then choose the network you
want from the control center panel (as opposed to just selecting the
network from the menu itself).
However, while switching wi-fi networks will require an extra step, I
actually think that the the experience will be better with the new
design. The current network menu contains a lot of information that