One of the issues of PWs for high-end tournament decks is that they are somewhat of a tempo loss for the kind of immediate effect they provide for their mana cost.
Planeswalkers as a type don't 'say' anything. It totally depends on their abilities. e.g. Tibalt doesn't really get you further ahead every turn. Every set they produce a couple very underpowered planeswalkers (for the planeswalker decks)/ In order to create 36 new planeswalkers, I suspect we're going to see some fairly large variations from the typical planeswalker ability patterns.I think we're underselling the power of the card type by a fair amount here. Teferi is why UW, Esper, and (previously) Jeskai decks exist in the current format. Standard control is another name for decks that try to resolve Teferi. In a more low-profile way, Vivien Reid has been the engine that's allowed midrange decks to compete. She's why midrange hasn't strayed from green, and why the strategy has leaned so heavily heavily towards playing creatures over spells.
Planeswalkers say "if I stay alive you're ahead, and you're going to get even further ahead every turn". Very few enchantments work that way. That doesn't mean your average planeswalker is tournament playable. But most Standard seasons are defined by powerful planeswalkers.
That is extremely unscientific, since what actually matters is what gets played. Of recent walkers... you really only have two or three.Let me hit Gatherer. I'm checking the planeswalkers (minus the intentionally powered down ones or the ones never legal for Standard), and counting how many were at least a decent hit in Standard, and how many weren't.
My extremely unscientific survey: 60 were hits, 31 weren't. That's a pretty damn high hit rate - in fact, I'd say that no other card type is even 50/50 as far as being Constructed worthy, even at the Mythic Rare level. And a lot of those 60 were total build-arounds that made whole archetypes possible.
I don't believe anyone is saying that PWs are not strong cards (even if not all of them end-up as competitive Standard staples), just that they are not the be all & end all.I've never been sure planeswalker cards were good for the game, so I'm wary of this many new ones being added at once.