Wow ok, so much wrong info in this thread.
1.) Doc vs. Marth on FD is def in Marth favor if he is competent. No platforms make it so he has INSANE positional advantage anytime you are above him. A good Marth will make it VERY hard for you to get down. Platforms are your friend, learn them and love them.
2.) Dreamland is your friend! The middle of the stage is super good for cgs and combos, Doc can survive forever, and the top platform is actually LOWER to the ground than on BF, which has the highest top platform of all the neutrals. While you may not want to fight Jiggs or Peach here, it's not super horrible vs. everyone else.
3.) FD vs. Climbers is bad for Doc as well. You NEED platforms to avoid their shenanigans. As long as Wobbling is legal, you do not want to get grabbed at all (especially by someone like Dizz), and FD limits your mobility hardcore. Avoid like the plague.
4.) ALSO, Stadium is one of Climbers best stage because there is no top platform, and they can't get circle/platform camped like they can on other 3 platform stages. Be very careful fighting them here, they will almost certainly CP you here if they like to wobble and you ban FD.
5.) FD vs. Spacies is great because they have no platforms to exploit against you. Pills control a lot of space, they can't escape as easily, you have CGs and super good combos if you catch/grab them. Lots of really good stuff here, plus spacies will almost certainly fear you here, so learn the stage well.
6.) BF is super good for Ganon and Falcon, who said otherwise? I'd be apprehensive about fighting Falcon on FD for the same reasons fighting Marth is scary there; monstrous positional advantage for Falcon when you are above him. He can just uair you for days, and you can't do too much about it. BE CAREFUL.
What else do you guys wanna know?