If you can't get your goods to market, you've not got a business. Scotland has 1 commercial airport that can take a 747 (not even an A380!)..... Prestwick. Fucking Prestwick! Additionally, No motorway links to Aberdeen, Dundee, Inverness, Stranraer, Scrabster and even Newcastle Ports.
You carry on hoping for the best but unless this square is circled independence will remain out of reach.