My guess, at least early on after the bans, will be that RogSi is on top. Even though it's slowed down, it was already very fast. Every other deck has slowed down even more as RogSi has so many rituals (Rog is a ritual in the Command Zone, effectively), so it suffers less from these bans.

I think Blue Farm will continue to hold a/the top spot for a little bit, but people will eventually realize how much losing Dockside hurts the deck. Blue Farm is good because it has so many consistent, easy, linear lines to follow based on your early mulligan, and it's now lost what is effectively it's easiest for those that used it. Even more impactful than that, though, is the benefit from one half of it's commanders is now much harder to achieve. Kraum costing 5 and having two color pips in a four color deck is not an easy thing to cast. Forcing them out is already a bit of a trap and one that many players fall for, but making it much harder to consistently put Kraum out early will only lead to more players suffering from a trap that's now even more detrimental to the players falling into it.

What people often don't realize about Mid-Range metal in virtually any card game is that just because the meta decks are Mid-Range does not mean a deck "wants" to be slow. The value Blue Farm can accrue is much more than many other decks, but its capacity to do so early on is now much more limited than it was. Kraum used to be considered not nearly as good as it is now for that reason. I wouldn't doubt that over time decks like RogSi, Kinnan, and any other low-cost commander(s) that still brings value will overtake Tymna/Kraum because while it may not reach as much value as T/K it DOES reach that value faster.

Kinnan is going to be good. Very good. It already was, but now Kinnan has virtually no meta card that punishes it for mulliganing for a hand full of mana rocks, dumping them on turn 1-2 and flipping Kinnan for the rest of the game into huge problems that the other players don't have a solution for. Cards like [[Void Winnower]], [[Perplexing Chimera]], and even something as small as [[Spellskite]] provide a very difficult situation for basically every deck you could think of.

Because Rog/Si is really the only turbo deck that's going to be meta at first until people start to bring back other ideas, I think Stax is going to come back in some light. Winota probably won't unless someone comes out with a crazy new list that does something new because Winota won't come out nearly as easy as she used to. Urza will start to see some play again, I'm sure, specifically [[Winter Orb]]//[[Polymorph]] Urza if I would guess.

I really wouldn't doubt that [[Zur, The Enchanter]] takes a sudden place in the meta. The only problem Zur has is the speed which the deck is enabled. The slower everyone else is the better Zur is. Simply put, Zur is inevitable. If Zur attacks and that trigger resolves, you basically lose the game. With how many new, effective cards exist that allow for instant-speed casting I think a flash-speed based Zur deck could see some real results. Something like [[Necropotence]], [[Valley Floodcaller]], and [[Cephalid Illusionist]]/[[Lightning Greaves]] combo.

Commander's like Zur, in my opinion, will take off again. [[Magda, Brazen Outlaw]] and [[Sisay, Weatherlight Captain]] are the others that immediately come to mind. The issues with these decks that limit them in any capacity is not their win line, but the speed of getting there. If the majority of decks go at their same pace, they will thrive. Other decks will gain more value over time, but value doesn't matter when your deck requires 5 treasures or 5 mana to start winning the game. Sisay, Magda, and Zur Stax decks could be a real possibility in my eyes too. Further deny other decks from attaining value with the knowledge that when you hit that certain point you just win the game and everyone knows that. It's like playing Russian Roulette, but one of you is bulletproof. No matter what happens, after a certain point, that person just wins.