Hi Trisha, thanks for the question.
As you know, Sanctuary is currently 8 books. The first seven covered the Bullen arc, and introduced 6 new couples. In that arc I revisited Joseph and Dale, because I wanted to give the two of them a proper happy ever after. After all, being an active SEAL is somewhat dangerous!
Book 8 started off a whole new arc, the Chicago Tower arc, and the mystery surrounding a murder, with police corruption that runs very deep. I plan to have book 9 with you in the early summer, and book 10 by the end of the year.
Now, as to revisiting characters, I adore Kayden, and I adore Manny... and as for Morgan... LOL... well, I have my favorites. Kayden is the one I would be likely to revisit. Bless him and his weird childhood in the compound, and his snarky sense of humor.
Thing is, and no yelling, I may well write a story about Kayden as a one off, because... he has a sister you see.... *Leave that here with a smile*.