no. i mean, he already wrapped everything up didn't he? maybe in his siguiente camp half-blood series he can mention things that happened to the other characters. like if percy and annabeth got married?
yes i think he should he left some things unansewered like who are the siguiente 7 half-bloods and what about percy and annabeth are they going to have a chance at romancie and he can keep on writhing percy libros like they say "a half-bloods life is never easy"