I thought the same, regarding Ryan's departure so soon after Faye's. They both had very anti-climatic exits which, in fairness, summed up their storylines for the past few months. Ryan was a good character, IMO, and it seems a shame that TPTB ran out of stories for him (or couldn't be bothered writing any) when the actor had done such a good job on the set-up/prison storyline.
Regarding Cain/Charity, it has become far too repetitive. For me, unless something new happens, I wouldn't miss Cain if he left tomorrow. I was excited about Debbie's return, but she has done hardly anything in the months she's been back, other than have a tedious romance and referee her parents' squabbles. Bring Jasmine back, I say.