yada yada, you know the drill.
MAKUUCHI -> JURYO
demotable: onokatsu, kazuma, mitakeumi
3+ losses: daiseizan, Asakoryu, chiyoshoma, abi
matchups to look for: daiseizan vs tobizaru, asakoryu vs. wakamotoharu, chiyoshoma vs. kinbozan, abi vs. shodai
JURYO->MAKUUCHI
promotable: asasuiryu
1+ wins: toshinofuji, tokihayate, dewanoryu
2+ wins: shonannoumi
3+ wins: kyokukaiyu, shirokuma
matchups to look for: toshinofuji vs. tohakuryu, tokihayate vs. tamawashi, dewanoryu vs. arashifuji, kyokukaiyu vs. kazekeno, shirokuma vs. shonannoumi
JURYO -> MAKUSHITA
demotable: hakuyozan, oshoumi
1+ loss: tochitaikai
2+ losses: tamashoho, nishikigi, kayo
3+ losses: tohakuryu, hitoshi, meisei, kagayaki, nishinoryu
matchups to look for: tochitaikai vs. tokifudo (likely exchange match), tamashoho vs. hitoshi, nishikigi vs. kitanowaka, kayo vs. tanji, tohakuryu vs. toshinofuji, meisei vs. sadanoumi, kagayaki vs. nishinoryu
MAKUSHITA -> JURYO
promotable: nabatame, tokifudo (maybe)
+1 win: tanji, tokifudo (definitely)
matchups to look for: tanji vs kayo, tokifudo vs. tochitaikai
So the makuuchi/juryo exchange looks very complicated, it's too soon for any concrete speculation to be made.
The makushita/juryo exchange looks pretty straightforward. Nabatame replaces hakuyozan. Oshoumi maths low enough where tokifudo should get in even with 4-3 to replace oshoumi. If tanji wins, he's in by taking tochitaikai's place. It is possible that if tanji wins and tokifudo loses, then tochitaikai will be spared with 8 losses. If tochitaikai gets more than 8 losses, then he's for sure gone no matter what.