Quote from BlazingRagnarok »Quote from BB84Prez »
I do agree with most of what you say and you can argue that before PW cards existed, some Legendary creatures were highly sought after and others not so much. Now that WotC has precedent in down shifting Legendaries (in ONE set) to uncommon I do not think it's far fetched to see ONE set with uncommon PW cards. If I were to design an uncommon PW, I would have it as a loyalty of 2 or 3 max, with one or two abilities as only minus abilities. They would be purposefully designed to not stay on the board the whole game. You cast them, use their ability to help your cause, and then they go. I think it would still be credible, just not highly powered.
It's not the first time, and it's not a precedent that can be applied as easily to planeswalkers. Kamigawa block also had uncommon legendary creatures for the exact same reason as Dominaria: draft themes. Both Dominaria and Kamigawa had strong legendary-matters themes, and, if those themes were to exist at all in a tangible state in limited, the legendary supertype had to exist at a rarity below rare. Don't expect uncommon legendary creatures to randomly pop up without a similar justification.
The flavor-based arguments against downshifted planeswalkers have been made already, but, from a set design perspective, nonlegendary planeswalkers that appear below mythic rare would only be included if doing so were absolutely necessary to create a desired limited format. The problem is that the massive level of complexity associated with the planeswalker card type itself, before we even get to function, clashes with NWO design that downplays complexity at lower rarities. Legendary creatures, by contrast, aren't that much of a step up from regular creatures compared to, say, the difference in complexity between planeswalkers and enchantments such as Sagas.
Legends had uncommon legends. The only downshift in rarity was the number of powerful uncommon legends. I think Legends had maybe one playable uncommon legendary creature (sunastian falconer - and by playable I mean playable in the context of the game back then), but the majority of the legendary creatures from that era were just special looking commons (lady of the mountain was essentially craw wurm)