That would be interesting, because as someone who travels up to Yorkshire a lot, I have noticed that not only are the trains an absolute faff, but there is no coach service worth mentioning! You have to go into London and out again, or take a similarly indirect route I believe. Currently driving is the only sensible way to get to Yorkshire from Oxford, so far as I have found.
An affordable service could come in very useful!
On a related note to all of the potential commercial routes in or out of OXF, is there any likelihood of businesses setting up shop? I can't imagine a MacDonalds is a million miles away?