Sorry I didn't mean that the patches would fix the sd70. I was referring to the unmentioned (until now) 'other errors'. For the SD70 I was suggesting that you look into addon content from places like: www.jointedrail.com www.uslw.com www.rrmods.net www.sporbust.com
As for the buildings and hills in the routes, I only know of one route that is built in that has this; the Harlem Line, which truthfully isn't a really good route in the first place. There are plenty of other routes for free that you can download and addon.
I think basically what I'm saying is 'yes, most the built-in stuff is crap, but that isn't the point of Trainz. You can very easily make & download thousands of free stuff at a much better quality then whats provided.'
peter