Isolation is a good description.
I've read pretty much nothing with Hutch, but him being a firefighter could give him a unique perspective, and if Dick were to actually train him, sure, why not.
Yeah, I don't understand why Amy hasn't returned. Tbh, I blame most of the Blüdhaven situation on editorial. It was forcefully returned under an editorial mandate but past the name and its closeness to Gotham, they obviously don't care for it. It's no wonder that it's a mess by now.
And as has been said so many times, it should be easy for writers to fill Blüdhaven with supporting characters and much needed life again. Dixon, Grayson, Humphries, and Seeley already did the work. Pick some of them. And with Spyral seemingly done for thanks to Bendis just put Tiger into Blüd where he can start an organization again and then expand out of it.
But I don't see any indication that Taylor wants to bring those past characters back except for Blockbuster. And Blockbuster may either be a mandate as well or Taylor just wants to write a Kingpin-esque character again.
It would have been cool if the police officers suspecting Dick of murder had been known to us from past Blüd iterations. They didn't have to be Svoboda or Amy, even if that would have probably made for some fun panels, just an obscure reference.
Maya? Don't you two mean Jen?
I agree, it was a great two-parter. I wish she would have reappeared the second Dick returned as Nightwing.