Um...I do have a more informed opinion. Over 20 years of training and experience in designing everything from small marketing materials to 8-foot tall 3-dimensional, interior lit letters and banners that cover the entire sides of buildings - and that includes vehicle graphics and wraps. Forgive me if I chose to use a visual example.
At a quick glance, the Pluto bus WILL look like a school bus to anyone who is or has a child (Edit: in the US) - which is one of Disney's big target demographics. The green stripe actually contributes to this problem because often, schools will use that area of the bus for a different color stripe to help the name of the school stand out. And where vehicles are very often moving, a quick look is all many people will get. Disney is an entertainment company, and Walt Disney World a vacation destination - with the aim of helping us to escape reality for the time we are there. A bus that brings to mind a school bus breaks that illusion - even if for only for a moment. The last thing a mother on vacation with her kids wants to think about is having to go home and get the kids ready for school. It's along the same reasoning as to why people avoid using large quantities of yellow and red in their marketing - because it almost immediately brings to mind McDonald's. Brand recognition can work both for and against you - in the case of the Pluto bus, it works against Disney.
Further, the fact that the white stripe that is above the green doesn't follow through across at least a couple of portions of the bus looks unfinished and unprofessional.
While we can tell that these buses belong to Disney, the lack of text and visual carry-through could make some guests think that these are "special" buses - similar to the Minnie Vans - rather than regular Disney on-property transport. People who are on vacation - especially in a place as busy and distracting as Disney World - don't tend to be good at reading or looking for signage. I think chances are very slim that many will think to look at the front of the buses to determine whether they are regular Disney transportation or not.
Another issue is that it's not a good idea to have a fleet of vehicles without some sort of prominent visual element that carries through. One of the biggest tenets in outdoor/vehicle advertising is that the message needs to be understood quickly and without much thought. If you look at the picture quoted below, the only two buses that are instantly recognizable as Disney buses are Donald and Micky. The rest could literally be buses from any other company. If you take the time to look closely - which most people don't - you can spot a smidge of Pluto and part of Goofy's hat, but that's pretty much it.
Without any common elements, the wraps make it look like they ordered some buses, then realized that they needed to put graphics on them, but couldn't settle on a design - or even worse, had a different person design each wrap. They look like an afterthought. In contrast to these buses, the Skyliner cars may be of varying colors and have different characters, but they all have the same white stripe and logo on them, plus all the characters were designed to look as if they're RIDING the Skyliner, rather than just being slapped onto them. The Skyliner proves that Disney is perfectly capable of having elements follow through differing designs and color schemes. These buses fail in that regard.
In order to achieve what they did with the Skyliner, they should have either used a logo that carried through or used one main color for the buses themselves, and then used the stripes to reflect each character's color, rather than the entire bus. The way they are, the fleet looks like a disjointed mess, and certainly doesn't reflect the world class reputation of Disney that they themselves seem to want so much to bank on these days.
