To help deal with a health problem or two, I find it very therapeutic (and enjoyable) to work on track plans within the Anyrail software (other track planning programs are available), primarily in N gauge. The most satisfying are real locations, with track plans derived from old maps.
As a discussion promotion, I present, therefore, a code 55 rendition of the once proposed replacement for Queen Street High Level and Buchanan Street stations in Glasgow.
http://www.hipkiss.org/data/maps/british-transport-commission_passenger-transport-in-glasgow-and-district_1951_proposed-new-north-station_5396_2481_300.jpg
The reference map is hard to discern at times, so some licence has been taken with regard to some of the crossings and turnouts. Also there are limitations when working with RTP track. What I'm getting at is, I know it isn't 100% accurate, but its a start and since it was never built, who's to say what it would have looked like anyway?
I've used the canal aquaduct as a scenic break, so everything to the right of that is "rest of the world" and doesn't have to be 100% plausible.
As for who would build it? It's rather large (the canvas is 17.5ft by 9.5ft - the size of my garage) so perhaps a large club or group, similar to those who develop and exhibit Liverpool Lime street.
Anyway, it's not a serious proposal, I just enjoyed drafting it with a view to promoting (constructive, and non-judgmental) discussion.
Hopefully some of you will find it interesting.