Starting to lean to this too but it had to happen this arc, not in the future. Don't really see any use for this plot in the future.
Oda waits far too long to answer a question or a mystery, even for minor things, and when he finally gets around to answering something like whether or not Kizaru gets a happy ending or dies or explains why he is so damn bipolar, it will feel like the moment has passed. Even worse if he saves it for an SBS aimed at
himself Noda Skywalker.
Post-Enies Lobby and Post-Alabasta were gems for actually providing answers and focusing on some extended Straw Hat R&R, along with giving us some well-deserved interactions and development between the characters, especially Aokiji and Robin, Luffy and Coby, or Usopp, the giants and the crew. If Oda bothered to those more often, it would help to tie up every arc rather well.
Closest thing that comes to mind to an arc like that post-timeskip is Zou, but aside from being lackluster, that didn't really provide any answers and the minks (and their elephant) ended up being painfully underused.