I still think that Taylor has to come back into the story somehow, most likely in some sort of danger.

But the fact that they showed Finch reacting to Carter's words in that final scene was important: he understands immediately the big emotional impact her rejection will have on Reese. So I think Finch will take action to correct the situation soon, to have his agent operating at full capacity again. After all it was Finch who brought Carter into the operation in the first place. When Reese asked him to watch out for her while he (Reese) recuperated in "Super," Finch's response was to throw her into a mini-case as a test. She passed and in the next episode Reese began their association. Reese wants her working with them, Finch will make it happen.