The things I want answers for are why Athena seems to have such a grudge against Asterion, why the Threadcutter was placed into the realm with Asterion, as well as why Aphrodite and Hephaestus did not vote on the trial. There's a few more too, such as how Asterion was stolen away from Hades despite the court being in favour of him staying. Another thing I would find very interesting is discovering more peacock feathers, which contain glimpses into the past. How amazing would it be if a peacock feather from one of P's ancestors had witnessed something vital to the story?
And yes, a satisfying ending is something everybody wants. Though, this is a heavily Greek inspired tale, so I fear for the worst. Memories can grow fonder when there's no more to be made, but as long as there's memories to be made, unfinished strings, there will be much more of Asterion to see. I think I mentioned it previously, that MC and Asterion reaching Asphodel together would be a wonderful happily ever after. Although, Luke and Kota are unlikely to go there, judging by what little we know of the afterlife and how you get assigned to a relevant place.