Honestly for me banning field of the dead (which they are absolutely going to do btw, this is why they're switching dates) would only be putting a plaster over this meta, there's wayyyyy too much wrong with it:

Teferi, time raveler should've been banned months ago, card is the complete opposite of what fun is, pretty much every card needs to pass the test of "how does this line up against teferi" before it can even get considered to be played - bonus points for it being able to randomly bounce artifacts and enchantments

Oko, thief of crowns is just dumb, card has way too much loyalty, and the +1 should have been a -2, if creature based decks can't answer an Oko in a turn or two it's gg, and even if they can they probably spent too many resources doing so, meaning they've lost anyway

Obviously field of the dead if it survives, no deck can compete with it late game, no idea how no one noticed that all the good land hate was rotating and they hadn't printed any decent new ones

When you have to make something as blatantly pushed as questing beast to make up for your mistakes with these planeswalkers and field of the dead and it STILL doesn't do the job you know they done goofed.

also, bonus points to WOTC for making the buy a box promo's with the intention of them being fun cards not overtly powerful and then mess up immediately with nexus of fate and now again with Kenrith, the returned king being a huge part of all the fire of invention lists haha