Personally I'd just rather the buses were branded as 'Bus' there's no need for stupid branding at all. The Beeline or whatever it is in Manchester isn't much better.

Unique route branding should be stopped immediately though as it just causes allocation problems and no-one really cares.

Just have Bus, Metro, Rail, Ferry. It works in Europe well enough and pretty much every other country aswell with each one with its own brand colour. Metro obviously being the yellow.