I find it to be quite disturbing and disappointing to have no new maps for the Stellar Phenomena DLC. It is of no use to have several new awesome neutrals on the edge of the map or deep inside someone's territory, so they will never have that much effect on the game's course. Putting these in central positions like chokepoints would do what the DLC is supposed to do, make these new things a center of some battles, and not totally basing this on luck. Same goes for new star types, on single star maps who would ever fight in the star gravity well unless they are forced to?
The previous DLC is okay because position of the new planets is irrelevant (though the bonus, Fortress world has the same problem as the neutrals mentioned above...), but these neutrals need to be around the frontline to be useful, otherwise they are no more than a strange cool-looking thing none of my ships will ever visit again..