I wondered about that, too, when I heard she was leaving. The timing really does seem suspect. I'm not a fan of Dorian at all. I find her too screechy and hard to listen to. Most of the time, her voice drives me crazy and I find myself having to lower the volume, so I won't really miss Dorian.
I heard about JPL and FF and I'm THRILLED! I've hated Gigi almost from the moment she appeared on the show and pairing her with Rex made it all the more painful. JPL just isn't a strong actor and pairing him with FF sealed his fate. If FF weren't a fav. of TPTB, she'd have been out ages ago. Force-feeding her down our throats the way they did just set it up for Gex to be even more hated. I'll be counting down the days until they're gone. Maybe someone will finally give him a taste of his own medicine and he'll know the pain of mourning a child, though I haven't heard anything about Shane leaving or dying.