If Oda actually building GV, we might as well get the full event
I think we'll get 3 more God Valleys Flashbacks.
1. From Harald's perspective. Who expected Harald to sneak into the Holy Land? Rocks is big in Loki's flashback for two reasons.
A. Rocks recruited Harald extensively, and considered Harald to be his close pal. I think Rocks WAS on Harald when he leapt off of the Red Line, and that they bonded after that, before splitting up. Rocks going to Elbaph WAS NOT the first time he tried to recruit Harald, look at Rocks' behavior; Rocks and Harald had a Sake/brotherhood scene we don't know about, IMO, after the left the Reverie, before splitting up. I think Harald and Rocks have very similar dreams, but Harald's was more peace focused, and Rocks is more willing to seize power.
B: Loki looks up to Rocks
Why have Rocks show up this much in Harald's flashback? Because Harald went to God Valley. We know Rocks trusts Harald, and that Harald hates violence. Rocks told Harald about the human hunt on God Valley after Ginny (THE GOAT) leaked the info.
2. Garp/Wang Zhi's perspective. Teach is a bastard, but, he's not entirely unloyal: Teach didn't want to kill Thatch, he wanted to find the Yami Fruit on his own using Whitebeard, then form his own crew. Teach recruited Ace; since Wang was Rocks' Nakama, and knows a lot, I think Teach has him alive. Garp and Wang reminiscing over God Valley is very interesting to me.
3. Kaido and Linlin when they return. Teach's Gura Gura quakes are primed to cause eruptions in a country like Wano with an unstable underbelly. This is why Newgate couldn't challenge Kaido: Newgate needed the Gura Fruit to beat Kaido, and using it would have caused Mt. Fuji to bust all over. Once Teach invades Wano, and uses enough Gura quakes, the Volcano will explode, and the bombs in Onigashima might go off, too. This eruption will launch Kaido and Linlin back into action (they can't swim out of the magma because it weakens them, they need an eruption to free them).
This is the Kaido flashback we never got: Kaido's childhood pre-Vodka Kingdom, and his exploits with Rocks/on God Valley. Since Kaido talked about his anger at Roger in God Valley, we'll get Roger and Kaido's beef, too.
We should get stuff from Rayleigh/Gyaban, but I don't expect full flashbacks from them. Partial flashbacks, if anything. Same with Sommers if he was on God Valley.
Garp gives us Roger's perspective, though, so if we do get stuff from Ray/Ya-san, it won't be much, just more crumbs.
This gives us multiple perspectives of God Valley:
A: Slave (Kuma)
B: Outsider (Harald)
C: Marine (Garp)
D: Pirate (Kaido/Linlin)
Glad Oda learned from Oden's flashback to split this shit up