Couple of mates and I bought PA as we are huge SupComm: FA fans - played a few games, but it didn't really grab us in the same way. Far too simplified, and the planetary "superweapons" just seemed a bit gimmicky. Also some random & annoying "features" like having 2 planets on the same orbit in opposite directions, meaning suddenly that 5 planet solar system becomes a 3 planet one and if you were unlucky enough to place on one of those planets you lose the game thanks to luck.
We've gone back to SC:FA - might pick this up if it drops to <£4 at some point, but can't see it otherwise.