I have to say im having a bit of trouble accepting that the car looks, does not have any kind of effect in the desirability of the car in the upcoming Tycoon part. How could we implement it even just a little bit? Well let’s start off by thinking the very basics here for a moment. You might safely assume, that there are lots of people in the world, who think that a Jaguar E-Type just simply looks better than a Opel Kadett from the same era. Although there might be some small % of people in the world who disagree with this, and state that in their opinion, a Opel Kadett actually looks better than a Jaguar E-Type (after all its about personal preference isn’t it?). But the latter doesn’t really matter, since MOST of the people will still say that the E-Type looks better than the Kadett. So the only thing that actually matters here, is what most people think.
So my suggestion is pretty simple, let’s just give some of the body styles a (small?) bonus in the desirability (or whatever you might want to call it)! No matter how you morph it, no matter how many or what kind of fixtures used, no matter what kind of suspension used, no matter what kind of engine used… they would just simply look good for the majority of potential customers.
This way, if you are building only something like sports cars/grand tourers, you would get a bonus to your image because you would be always using the good looking body styles, (and also maybe a penalty if someday choosing otherwise?). If you are a “basic” car manufacturer, then you could slam a cool looking body in top of basic technology, and then produce a car that, if not anything else, then at least would look good in the eyes of potential customers. That would at least be different than just putting a more powerful engine in your basic s*tbox. I Think something like this could have the potential to add something to the gameplay, while not “discriminating” peoples tastes too badly and also being somewhat realistic.