Hey Nando, MJ here. I have all of these characters.
Alas I have no natives to Duncaster as all of mine have just ended up there. Two of my cast will be familiar to you and those are of course Arden (whilst no longer a head of a house he is the vampire king of NY and runs a supernatural fighting ring called Tooth and Nail. He's still very much what you remember but with less politics and need to play nice involved) and Daniel (no massive changes to him. He does however own and run The Looking Glass)
The newer ones are Silas who whilst his face will be familiar his concept is different. He's Fae, exiled from Faerie for not following a direct order to slaughter a bunch of people and is currently working as the manager at Tooth and Nail. It's entirely possible he might be a regular at the flower shop because he likes plants and has a bunch of them himself.
Then there's Han who has zero desire to look after anything or anyone else with a real reluctance to even do it for himself. He's a former hunter turned vampire hellbent on revenge so honestly the boy could do with distractions. Maybe even a Bonsai tree, lol.
Let me know if anything sparks joy and you know where I am if you want to talk scenes, lines, connections etc!