All of them are the same card mechanically, but feature different art with new suits
Which brings us directly to why you might not want to play this particular wheel, discounted or not: If we spent all that time getting those cards in the graveyard, why would we want to shuffle all of them back into our library
(If a creature with a finality counter on it would die, exile it instead.) So, fairly self-explanatory here, if a permanent has a Finality Counter on it, and that permanent would die, it doesn't hit the graveyard
Even if you have enough uses for fodder that theyre not dead draws when Braids is off the battlefield, having multiple types is a major drawback since it gives opponents many more choices to sacrifice themselves
EDIT: See this video, specifically game 1 of match 3, for a great example of Snapcaster Mage being used as a finisher.
Currently, there is no exact date known for when the new cards will be released , but it is confirmed that they will be released in Q4 of 2023