As a Power fan, I gave it a 10 but:
* the story feels a bit rushed or on fast forward sometimes
* some events in the first episodes are given to us without much context
* the only thing that annoys me the most is the use of Tommy Flanagan, Scottish actor, using his Scottish accent to portray an Irishman. Some here in the UK might call it blasphemy. On this part, they could've done much better.
Other than that, Joseph Sikora is at its best as Tommy Egan.