blessing is the ripper would be an awful direction for the show to go in. it's lazy to make everything have some meaning that always come back to dexter, it makes the show suddenly feel very insular and contrived. like just consider what's happened so far
>dexter arrives in new york
>first uber ride he gets is from the ny ripper
>he immediately makes friends with him
>the ripper helps him get work and offers him somewhere to live
>invites dexter into his home and meets his family
>at the same time, there is a killer exclusively going after uber drivers
>dexter gets a lead from meeting the ny ripper's friend
>dexter kills the uber killer
>this leads to dexter meeting a financial wizard with an interest in serial killers
>he's specifically interesting the ny ripper because he grew up in the same neighbourhood where the ripper becomes active
>also randomly dexter's son kills a guy
>the detectives investigating the case suspect dexter's son
>they have a backstory with the ripper
>the lead detective specifically isn't over solving that case
>meanwhile dexter is never suspicious of blessing
it would be a cheap, unearned twist and would make the entire setting of the show feel fake, almost hypocritical of the broad backdrop of new york, with everyone dexter bumping into coincidentally being intimately related to the ripper. it's more interesting if the ripper is simply a piece of furniture in the background, part of a bigger picture. the reason why episode 4 was so good was that it put dexter in a foreign situation facing something more elaborate than anything else he has encountered.
if the season will truly end with well dexter just killed all of prater's guests, oh yeah and it turns out blessing is that serial killer prater is obsessed with and dexter kills him too, it will be beyond anti climatic.
i don't really see what's wrong with actually writing some characters that feel real. what's so wrong with dexter just having a friend, not another eventual obstacle