It would be nice if you put more effort into your proposal. Pics, descriptions, talking points, information about the route. I have a route with this line, though it encompasses almost all of Denmark's rail system, it could use an official recognition. Albeit it wouldn't be as big as the one I currently have. But should be more detailed and better looking.
I'm with you. You do have to kinda sell your proposal, not just leave it here like a suggestion box. If you want DTG to notice, you'll need to show them that it'll make money.
I put forward the route from Padborg to Fredericia. This route would also be another great addition to the beautiful Country of Denmark https://forums.dovetailgames.com/threads/denmark-fredericia-padborg.12686/