Chrissie Watts and Sean Slater what a power couple they could be - and it would be a really good laugh watching old super-spud threaten him again.

oh i like that.

you are almost as flippant as me.

Minty

Okay, I've had new ideas of who should return (some would be temporary, guest returns or recurring):
Zsa Zsa Carter
Martin Fowler
Vicki Fowler
Grant Mitchell (temporary)
Courtney Mitchell
Steven Beale
Carly Wicks (temporary)
Zoe Slater
Sean Slater (temporary)
Mandy Salter (temporary)
Simon Wicks (one-off guest)
Michelle Fowler (one-off guest)
Melanie Owen (possibly temporary)
Sam Mitchell (temporary)
Peggy Mitchell (one-off guest)
Louise Mitchell
Chrissie Watts (possibly temporary)
Ricky Butcher (one-off guest)
Dan Sullivan (temporary)
Dr Harold Legg (temporary, recurring)
(If I wanted to be really controversial, I'd consider Kathy Beale or Cindy Beale BUT only if the storyline extremely good and if it added to show rather than risking it's credibility).
To make way for them I'd axe some characters and I'd consider: Lola Pearce, Whitney Dean, Rainie Cross (get Nick Cotton to kill her off), Charlie Cotton, Yvonne Cotton, Liam Butcher, Donna Yates, Tosh and maybe Cora Cross and Mo Harris.
Vicki and Spencer will probably be recast, I'd recommend Charlotte Ritchie and Jason Maza. Sam Mitchell will have to be played by Kim Medcalf due to Danielle Westbrook being an unreliable cokehead. Susan Tully would need A LOT of money to agree to come back (and probably personal begging from Adam Woodyatt and Letitia Dean).