Hope he does to be honest, even with everyone the mink-ninja-samurai-pirate alliance doesn't look enough to challenge Kaidou. :/
But Ninja-Pirate-Samurai Alliance already have enough big names who can challenge Kaido and his crew like:
1)Zoro-Kinemon and some Samurais can beat Shogun
2)Dukes will get their re-match against Jack(lets say Drake joined this fight and helps dukes beat Jack)
3)Sanji-one of the WB commander(Jozu) and lets say Hawkins faces another calamity
4)Jinbei-another WB commander(Vista) and SH(like Brook or Franky) beats the last one
5)Marco will face Weeble
6)Ussop and Nami might lead some fodder army(Samurais/Minks) who will face Kaido's fodder army.
7)Law-Luffy-Kid and later other supernovas like Zoro-Drake-Apoo-Hawkins and killer might face Kaido.
I don't think Moriah is required in Wano arc. He already got his a** kicked by Kaido once and lost his crew. I dont think he will dare to step foot on Kaido's territory again.