I joined a power, tried Powerplay... I have mixed feelings so voted indifferent. I quite like the general concept but feel that the current implementation is deeply flawed to the point that I ended up withdrawing my support. That said, it's very early days for Powerplay and I think it will improve over time.
As with Elite: Dangerous in general, Powerplay in particular needs much, much more variety. You should be able to support your chosen power in a greater number of ways to support your playing style, but with different (and more tangible) benefits so that the powers don't become indistinguishable.
As with Elite: Dangerous in general, Powerplay in particular needs much, much more variety. You should be able to support your chosen power in a greater number of ways to support your playing style, but with different (and more tangible) benefits so that the powers don't become indistinguishable.