And that post-credits scene will be that of a humbled, one-armed Kylo Ren dressed as a peasant, visiting the "Museum of Skywalkers" to learn about his "true" heritage. Fits perfectly in with JJ copying everything. Perhaps Mace Windu will also make a brief appearance, revealing that he, too, has been in hiding for decades, and that the only injury he sustained in the fall from Palpatine's office is now covered up by an eye patch.I'd rather they realize Snoke was a dead end character which they killed off to save everything. Let him lie. Please.
As much as I'm hoping for some other things, I'm thinking they go to the Death Star remains in search of some "key" that brings everything together and wraps everything up. They find some old "Emperors chamber" which has him on some sort of database/hologram (whatever) that explains everything and gives closure.
...and then of course a 30 second post credit scene that then leaves everything open ended and fans wanting more for the next 10 years.