Board Thread:Spoilers!/@comment-1916997-20161031164333/@comment-24674051-20161107172952

and to add to what CDA said, they have introduced characters/stories already that have not yet been explored (Among them the Scarlet Letter, the adventures of Tom Sawyer, Goldilocks, and the 3 Musketeers). Depending on the plans, that's 4 episodes worth of backstory right there. (and we are already up to 6x08, and did not have any major character introduced in 6x07). Plus we know we are getting more from Morpheus soon as well, plus the return of Robin and whatever they have planned for that story arc.

Point being I wouldn't worry too much about the introduction of new characters. there is still plenty of time. and the chances of a Season 7 are looking decent at this point as well.