From a selfish point of view, as someone who lives in Scotland, I'm worried about what my opportunities would be if Scotland vote yes. Whether or not this would affect my chances in getting into the cockpit through programmes like BAFPP / easyJet MPL I don't know, however I really hope that it wouldn't.
To add some substance to this debate, however, if Scotland votes to become independent, the government has stated that APD will be quickly reduced by 50% with the view of abolishing it completely.