Hi toitoine'
have you thought of putting your ideas on the Lego Ideas page (
https://ideas.lego.com)?
You may have seen that Lego recently launched a model of the Caterham 7; this was done through the Ideas site where you have to get 10,000 votes in the period of a year for Lego to consider the idea. With the backing of the Caterham community plus backing from the factory this was easily done. (I know about this as my son has a Seven & I voted for it & bought it for him at Christmas!)
I am sure we could do some thing similar but it needs a genius like yourself to build a model in the first place & then promote it.