Picked up PM awhile back, and find I'm playing it more than both melee and brawl. although this might be because I have no one to play against... and the PM computers give... almost a challenge.
Love ness, always have, always will: optional DJC is epic, lets him do much more all around the stage, return of SSB dair makes him a threat, cancelling PK fire is also very helpful. only a couple things to say. there are multiple things odd about PK fire. Even after activation, each burst can be power shielded, absorbed or reflected, so basically if they are caught, they can spam shield to disable the PK fire, and prevent ness from approaching. also against ness/lucas, they can heal 20+% by jumping into it, and just roll or jump cancel their shields. also G&W can get a full bucket off of it... gonna kill that matchup lol. finally, d-throw over PK fire will often kick them out of the grab, allowing them to do pretty much anything while Ness is stuck in grab release.
I know PK fire is probably one of the best projectiles in the game now... but should it really have so many ways to backfire on ness? only one that does it iirc.