Why won't you add some information to this proposal? Why you want it, some cool things to see alongside the route, real pictures showing interesting places... Maybe also give a list of possible rolling stock on such a route... Seriously, I'm getting sick and tired of these "I want X to be added" proposals where nothing more than just that is provided.
Don't worry, here's another proposal for the same route https://forums.dovetailgames.com/th...-railway-fenchurch-street-shoeburyness.17668/
And done so as to at least invoke a spark of interest.... Even though it is down south!! Sadly there wasn't anything to read!