This list is so obviously made by a Blackwing player Cold Wave banned, with Whirlwind and Oppression at 2. That'll be the day.
What is it with people? They want the format to get slowed down, but then they turn around and say "unban Heavy Storm". Heavy Storm is by far one of the most broken cards I've ever seen played (I wasn't playing in the days of Harpie's Feather Duster). It destroys all Spells and Traps. It doesn't return them to give your opponent a chance later. It doesn't destroy 1 or 2 to at least give people a chance. It simply destroys all of them, and then the game is over.
Cold Wave banned yes. More broken than Heavy Storm, especially with cards like Hyunlei, Black Rose Dragon, and Scrap Dragon out and about. Also, Cold Wave has a tendency to stop Gorz, which is painful.
Actually, no. Last Will is much more broken. Destroy by battle. Send. Tribute. Synchro.It doesn't really matter how you do it, but once you do it, free monster Special Summoned FROM THE DECK. Any monster you want FROM THE DECK. Sure, it has to have 1500 or less ATK but what is that? Emergency Teleport helped design an entire format, and it can only get 3 decent monsters.
Sangan. Dandylion. Lonefire Blossom. Destiny Hero - Malicious. Dimensional Alchemist. Card Trooper. Spirit Reaper. Plaguespreader Zombie. Darksoul. Fulhelmknight. Emmersblade. Pashuul. Infernity Necromancer. Infernity Mirage. Lumina. Gale the Whirlwind. Yubel. Any Gadget.
I don't even want to count all those.
Now to Oppression and Whirlwind... What makes you think Blackwings need the help? Have you seen the top tables at the YCSs? Blackwings are all over them. And what help do Blackwings need without Dualities? Only one build ran 3. Another build didn't run any. Oppression is also one of the most broken cards I've ever seen, since it shuts down every Deck (except Blackwings), and it's Continuous. And it only has a Life Point cost so you don't lose any card advantage at all. Not to mention the new support Blackwings are going to get in the form of Zephyros the Elite, who can return Oppression to the player's hand as a cost to Special Summon himself from the Graveyard. Yeah, Blackwings don't need more help.
I have no opinion on Duality. Sure it's broken, but it's still just a deck thinner.
Mezuki at 2 is fine, I guess.
Necro Gardna was limited because it gave Lightsworn decks too much control over duels. They could stop any attack, or simply remove it for Chaos Sorcerer. It's too good in Lightsworn, and that's why it's at 1, and it can stay at 1, since Lightsworn is meta again.
Darksoul, in my opinion, is much more broken than Faulltroll. Darksoul let's you search any X-Saber from the deck and add it to your hand. Even worse, it's at the End Phase, so you can react to whatever your opponent plays and change what you want to search. And Faulltroll at 1 would only change the deck up a bit to a build with more focus on Ragigura to recycle Faulltroll. We saw what happened when Blackwing started rethinking its strategies. Regardless, X-Sabers do need to get hit somehow.
Premature Burial is meh. It's too easily searched and too easily abused to not be banned. There are so many cards that can return cards to the hand, and that's exactly what Premature Burial wants. I think it should stay banned.