Preparations are the heart of PP, and the current consolidation vote which allows powers to have 0 preparations is removing any remaining point PP has.
I'm sympathetic to the grinding/5C problems Aisling has faced, but she is currently ranked as high up as her players want her to be (3rd). I doesn't seem to have hurt your galactic standings at all.
Maybe we can also hear some Mahon pledged players about the first world problems they also face
Right now preparations are
not the heart of PP, because, as pointed out, there is nothing to prepare. Preparation has no positive value for the powers themselves in these circumstances. It has value to individual commanders as a way of making merits, but that's all.
Right now there are three inescapable rules of Power Play that have locked it into stasis:
1) there is a finite number of populated systems (leading to a finite, even smaller number of profitable systems)
2) not allowing for the new consolidation mechanic, it would be fairly easy to take control of an unoccupied system, requiring only two weeks of effort directly targeting that system
3) conversely, it is currently rather hard to shake a system out of control, requiring two weeks of effort against the whole Power.
Until at least one of these three points is addressed nothing big will change.
Really, there needs to be a way to directly target, release (or defend) controlled systems rather than the entire Power. This would allow for something along the lines of border skirmishes or territorial wars, whereas the current mechanics really require full-on attack on an enemy Power to achieve anything.