If you were to build an out of town stadium it would make most sense to have it near the M73 at Baillieston. Plenty space, in the middle of Scotlands population centre. Close to M8, M73 and M74. Rail links direct to Edinburgh, Lanarkshire. Glasgow central and Glasgow Queen street. with the ability to use the current network to run direct footbal specials from any of the Stirling inverness /Aberdeen lines if needed. The X900 bus that runs between Edinburgh and Glasgow every 15 minutes and corpy busses all the time. Its perfect.
Plus I could walk to the 2021 cup final.