My own experience and I KNOW I am not the only one here is that the current buses use are NOT liked at all. When the Albury service was suspended for gauge conversion, the replacement buses were little used most prefering to drive to Seymour rather than take the bus and a lot were driving long distances, When the Shepparton train is carrying a lot of passsengers it is usual for VLine to support it with extra buses, again from experience most passangers will move heaven and earth to get on the train rather than the bus.
They are also MUCH slower than trains, inspite of plenty of people who have claimed they are faster, they are much slower to load and unload and are limited in speed where as most train services now run at 130kph.
Now I am talking here about the standard tour buses VLine normall use, I believe (and this is the primary reason for this thread) that specialised buses, low floor, wide door possibly articlulated with some kind of easy access luggage racks would be by far a WWWWWWAAAAAAAAAAYYYYYYYYYY more exepted altenative. Another significant improvement is small dedicated bus stations with a platform level with the bus floor, I am not talking about anything that would cost a large fortune just something that would make the bus service easier to use.
Note: None of the items in the above paragraph are new, they have all been used over seas in various countries to improve patronage of bus services.