Absolutely agree it is a virtual impossibility (although I would say look at the US dramas with Martin Sheen, Michael J. Fox, Rob Lowe, Lawrence Fishbourne all willing to make the shift from big screen to little) BUT you are right, there is not a hope in hades of Neeson actually doing the gig.
As for canon, I've said in another post, IMHO you can throw it all out of the window as far as I'm concerned as long as I get a good story - hence my 'real' Doctor being David Morrissey (though Dalton would be awesome as well)
