With this new chapter, probably Luffy will go to Whole Cake Island, and before Wano (I hope he beats another Shichibukai before fighting against a Yonkou and not the other way around) will fight against Weevil.
They fight with Weeble, but Weeble's hatred against BB might turn things around. After all his "mom" wants to find Marco. Weeble just wants revenge on BB.
And yeah, right now I also don't see the SHs in space, but who said Eneru won't return to OP-earth? Jaya definitely is connected to what ever is in the moon (the guys on the wall have the same wings as Bircans and Kalgara, 2different types of wings though) and Jaya was "penetrated" by Ouranos in greek mythology of creation. It is just my best guess regarding Ouranos. It is the thing Eneru has discovered. What else should it be? A giant bird? An airplane? Superman? IDK.
–- Update From New Post Merge ---
And Raftel is the island/country Clover was talking about. It is not MJ. I will point out why:
1. The island that was shown in Clovers explanation is an island, not a kingdom on the redline. We see that island surrounded by water, not by clouds. If Oda wanted us to speculate if it is MJ, he would have surrounded it with clouds/fog. But it is pretty much the same structure like the structure that is always shown when there is a talk about Raftel (Piles, bushes/trees, and so on).
2. There is this argument that MJ was the former HQ of the Ancient KD and was then occupied by the newly found WG. IMO the Ancient KD NEVER was near MJ (though they were affiliated with FI, that's the closest spot the Ancient KD reached). But how do I come to this conclusion? Well, lets look @ the WG itself:
Their world nobles love to look down on people. They even call themselves "heavenly dragon people" and they use "Saint" as their titles.
The WG sees itself as some kind of divine institution. Now do you really think the Ancient KD was anything like that? I don't think so.
MJ was built AFTER the Ancient KD was defeated. So the 20 founding kings could look down on the world and the whole world has to look up on them and the world would easier treat those 20 kings like gods.
I hope any disagree-ers will at least get my point now why I don't think the Ancient KD was MJ.