This is a tougher question than it first appears, because it's not simply 'who are your favourite pros?', but 'who do you want back', which is slightly different.
Strictly is a great springboard for pro dancers to move into other areas (if dressing up in silver lycra and a crash helmet is something to which you aspire, for example), so there are a few dancers I like to watch but who would be better off doing other things. And it's nice to introduce new dancers (as we found this year with Artem, Robin and Jared) even if they don't always work out (Hayley Holt, I'm looking at you).
There are some who have blotted their copybook sufficiently that they will never be invited back, however much we might miss them, and others (Matt, Ian, Darren) who gritted their teeth and suffered the indignity of the dance troupe and who could legitimately be invited back. I haven't thought about how the following would pair up for the pro dances, but these would be my preferences for next year:
Males:
Artem Chigvintsev
Ian Waite
Robin Windsor
James Jordan
Brendan Cole
Vincent Simone
Shem Jacobs (acquitted himself well in the troupe)
Females:
Natalie Lowe
Katya Virshilis
Kristina Rihanoff
Ola Jordan
Flavia Cacace
+ 2 new dancers, although I wasn't impressed with any of those in the troupe, I'm sorry to say