I wonder if Michelle Ryan will show up in Redwater if it makes it to another series?
I would love Kat to return to EastEnders, she makes the show a lot more enjoyable for me, but given the current state it's in and has been in for many years now I don't suppose there's much reason for Jessie Wallace to want to return if Redwater is a success.
Redwater has a stronger cast and production team, beautiful filming location, only films four months of the year allowing it's cast time for other projects, more prestige as a BBC drama and a guaranteed starring role. If the opportunity is there for it to continue I can't imagine it would be a difficult choice versus an EastEnders which is looking very tired.
If Redwater doesn't make it to series two I think Jessie Wallace will be offered her job back on EastEnders and I'd certainly welcome her back. SOC isn't interested in (DTC's) new additions to the Slaters, but that doesn't mean he wouldn't want to put his stamp back on his original Slater star.