More often than not, the sun study is part of a great many other factors, such as traffic and wind analysis, wildlife, etc... it's not really something we need to shout about from our perspective to be honest, because it falls under the Environmental Statement. We have only ever done one sun study that dis-proved a case that a neighbour brought against a private house being built in Alderley Edge. The neighbour believed that the new house next door to him would restrict his 'right to light'. Of course there would be issues with light, but the sun study proved that there was no 'shadow' impact due to the orientation of the site. (It doesn't mean his light was restricted, as his view of the sky would still have been diminished).
In the case of tall buildings 'right to light' will always be an issue, particularly in heritage, and residential sites, but it's not something we often focus on here.
I think you should shift your focus more toward Visual Impact, which is what we deliver. Visual impact has more to do with view, consideration, suitability, use, and symapthy for the area... The Environmental Statement refers to wildlife, light, wind, traffic etc... The Design Statement (where we are also involved) will then refer to aesthetic and rationalisation for the proposal. The Visual Impact Analysis (VIA), where we do most of our work, will refer to all the visual aspects of a development, whether it is from key distance views, or from immediate points that are sensitive to the area.
If you think about communicating Virtual Planit in the terms that I spoke about last week (ie 'The Invisible Man') and the fact that we provide Visual Impact Analysis, apart from the irony, it does start to sound like a story... maybe?