I stay in Kirkliston and still say they don’t deserve to have it back. They had their chance and refused to use it!
I think another factor was (at the time) First Buses 38, which turned into the X38 in January 2020 with no other change bar the "X" in it's service name, ran all the way to Stirling via Falkirk whereas the Lothian Country X38 just terminated in Linlithgow Bridge with the only route difference that it serviced Linlithgow Bridge so it essentially was the same route as First Midland Bluebirds X38.
I personally don't think there is any way for Linlithgow to receive a Lothian Country bus due to the amount of competition there with not only First but Prentice of Westwood and SD Travel too.
However, although Kirkliston neglected the service, there is potential there, why not (like previously suggested) extend the 275 or 276 there and make either of them go to Queensferry, I understand this sounds silly but hear me out:
Reasons for why the bus should go to Queensferry:
Assuming the bus would operate hourly, so every second bus terminating in Broxburn and the rest at Queensferry, having the 27⅚ operate to Scotstoun terminus then turn into the 43 to Edinburgh to save on dead runs from Livingston to Queensferry and will provide a daily link to Queensferry that the 7 only operates partially daily. Both the 275 and 276 go to Uphall Station providing links from Dalmeny Railway Station to Uphall Railway Station (assuming the 43 would allow through travel) for additional connections around Scotland.
Reasons for the 275 specifically:
Having a 275 operating to Queensferry allows for residents of Queensferry, Kirkliston and Winchburgh to all have a direct daily link to St John's Hospital (I understand that First West Lothian's service 600 currently operates to St John's but this is a temporary measure until the 27 returns which was suspended due to the driver shortage epidemic).
Reasons for the 276 specifically:
The 276 would have a much quicker run time to Livingston the Centre than the 275 and almost would reintroduced a hefty portion of the old 22A route that used to operate, albeit with small passenger numbers.
All of that is for the suggestion that Kirkliston could theoretically have a service that works.