To my mind there's a good reason to put "Manchester", which is that an unfamiliar passenger going there probably knows that they are heading for Manchester, but might well not know the specific terminus they need to look for, especially if the nearest stop to their destination is actually before the terminus. Besides, from most of the outer reaches of GM there is only one option for Manchester terminus anyway.
IMO the best way of doing this would be that it says Manchester until it gets close to the city centre and then changes to something more specific. This is actually what the interior displays and announcements do, switching from "This is the 36 service to Manchester" to "This is the 36 service to Piccadilly Gardens" on reaching Salford. Unfortunately the exterior and interior are controlled by separate systems (for which different bodies are responsible, for some reason!) which is presumably why this isn't replicated on the exterior.
Agree re capitals. The accessibility regs are very clear that destinations are not to be written in capital letters only, and for some reason they have decided to ignore that. Also, some First destinations have the route number on the left, which is not good practice, while some "correctly" put it on the right. There is a total lack of consistency.
"Bee Network"