Got an opportunity to get into the new PF's, and IMO I think they are alright, plenty of aliens to go around and a nice ending ship I've yet to get on.
Piccies!
{First Picture didn't work, but it showed the level of the mobs, which is L250}
So..many..bugs..
Onward (Pretty canyon
The end ship in PF #1
The shipman
More mobs
The nano protecting you
Guardians of the 3rd PF's Main Ship
After flying past those guardians, I died to a gate that was closed (need to kill the mobs beforehand).
All regular mobs in these playfields seem to be L250, and be in a healthly amount. Upon talking to some BugHunters, they told me they couldnt even take down the final boss (he "cocoons" you too, I hear. ), so expect some hardcore difficulty for some you greater raidcrews on RK.
Enjoy. =)