Agreed, PP will always be a bolt on to the rest of the game no matter how much they polish it. Once you try it you can easily tell that it's almost like a separate module to the rest of the game, that's why it's so easy to ignore and forget it even exists.
Moving it to open won't make a difference, all it will do is stop the small amount of existing players from exploiting solo mode to flip systems.
And does anyone care really, nothing changes in the game other than text information when a system is flipped - it's not like flipped systems start selling different goods or offer new ships or have new mission types is it?
It's pretty pointless IMO.
As I’ve said a few times now, I’m glad they’re moving PP to Open, now it only infests 1 out of 3 modes rather than all of them.