Well here's my tuppence worth as an idea for the Glasgow operation.
I know these E200EVs etc have been bought in etc but it think First should maybe try and look at have a predominately Decker operated fleet, similar to the way that Edinburgh is. Now there are 2 reasons for this:
1) Would allow certain routes to run with slightly less frequently but with no impact on capacity therefore also helping the driver situation as well
2) There are so many routes on the Glasgow and Lanarkshire operation that would work well with deckers IE as most have mentioned the 1, 2, 3, 240, 267 etc
Now obviously there would be benefit to keeping a good number of singles as well for some of the more "orbital" routes or ones that wouldn't merit deckers such as the 8, 90, 46, 65, etc.
Again i get that a decker will cost more to run, but I feel if they headed in this direction a lot of the capacity issues for a lot of routes would be solved and if there is any issues with certain routes etc then either re-route or continue to use singles.
I know this is very unlikely to happen, right enough.