Lets say Orochi is alive.
as we saw from Oden Piece, Kaido/Orochi wanted to isolate Oden from his countrymen and scabbard. in that golden hr fight, Wano basically abandoned Oden, he had only his family and scabbard to his name.
so what if: Oda wants Orochi to feel the same? Kaido beheading him means his bestie just broke up with him. Kaido already gave ultimatum to the ppl affiliated with Orochi to join him or die. fukurokoji and Co already betrayed Oden for Orochi. so i would say they will all do the same again. his one of the most trusted bodyguard kyoshiro is also his enemy. soon he will also lose kanjuro too imo.
So, he loses his Oniwabanshu, Kyoshiro and whatever forces he had for himself. Scabbard and the alliance is also coming after his ass. Soon Wano citizen will also abandon him like they always do(see Oden
)
so basically it would be, Orochi VS Beast+BM pirates+Former Orochi Forces+Wano Citizen+SH Alliance.
as we also know dude is a bigger pussy than Ussop can ever hope to be, He will be extremely terrified seeing everyone wants him dead, not just scabbard. just imagine the look in his face when he realize this and what will be going on his mind when he will be confronted with Yama. he will have a horrible death, a fitting death for him i would say