Hello Paul, all I can say about your projects and screenshots of said projects is wow, wow and WOW. You've obviously hidden your talents away from us all and we welcome guys like you with open arms into our Trainz community. Please don't give up what you have started, if you need some encouragement, we will all give it to you. :hehe: Seriously though, some creators have uploaded incomplete routes onto the DLS before to give the rest of us the chance to finish them off to our liking, it is up to you as to whether you would do this or not.
The point about the trackwork is highly relevant as the MP wood is lo-poly and used extensively on high density layouts such as yours would be hugely benficial regarding frame rates. If you have Vistamap and Trainz Objectz installed on your TRS2004 you can change your tracks using this piece of advice on this website
www.sectionshed.com/english/Tutorial/objectrep.html however, as was also mentioned, this works well ONLY for double-track, single tracks cannot be replaced, so I am lead to believe, and of course anything attached to the tracks, such as signals, track markers, etc, will also disappear when you hit the delete button, so please be careful, I personally used a blank baseboard to experiment on, better than losing a whole layout if things went pear-shaped. :hehe:
Good Luck for your future ventures.
Cheerz. ex-railwayman.