Along with all the classic RE games, Revelations has certainly found a place in my heart.
There was an interview in which the producer felt that the game was well recived and would be more than happy to make a sequel for Rev-but of course RE6 is coming out real soon, so it's unsure if it'll ever become a reality.
I would LOVE to see Raymond, Parker, Keith and Quint make a comeback-they had engaging personalities and the ending was very ambiguous, which does leave room for a sequel!
furthermore, I felt that Jessica and Raymond's backstory has many holes, I'd like to know their true motives...
Maybe someday in another year or so, Capcom will honor its homage to a TRUE survival horror game.