I think Ford should give Chris or Petter a test in the Focus to see how they'd do. There's really little other choice for Ford, as I see it; JML crashes too much. PG Andersson, Gigi Galli, Henning and Matt Wilson just don't have the speed of Petter or Chris.
Of course, if they could convince Marcus to come out of retirement, that'd be their best chance. But from what I've heard from him, I don't think he's keen on signing up as a permanent driver.