Why would the Gaians let the Mollys even think about building a station in their home turf? Possible future neutrality aside, you cannot put 2 alpha dogs in the same pin, else they spend their time with territorial pissings & eventually rip each others throats out.
The Brets getting busy in Edin means they have to constantly fight off the Gaians (& they would without a doubt, go completely rabid) & be more than a massive drain on the bret war effort, the 2-front fighting probably resulting in the loss of Leeds & eventually making Edin into a massive warzone while they get the everlovin snot beat out of them in one place from multiple enemies. Is it worth the risk?
& a hole directly into Orkney? while the BAF 'claim ownership' of Orkney? Why would Bretonia get access to another house without a bufferzone, when all the other houses have one between them?