It is a nice thought but to be honest I doubt that it would happen, I think it's more likely to see how the new walkway is looking and whether they prefer their new designated (11) to their old stands of either (9 / 3).
I think it is to do with the KLM core team that is at CWL, i think that they would have to extend the KLM check-IN if they were to operate a 737.
It's a nice thought and we cld all dream.
