Even corridor branding is also fraught with problems though. Take two of the Bristol area corridors - Citylines East (6, 7, 17, 42, 43, 44, 45) and South Glos Lynx (T1, Y1, Y6). First have just brought in two extra peak journeys on the T1, but they are operated with Citylines East vehicles, as they both go on to 17s once they arrive in town. So the northern Bristol suburbs now have regular journeys operated with East vehicles.
The more I see of it, the less I like route or corridor branding. Local liveries, yes, but not this mess.