Hey Roy, I recently purchased the Laggan West route and I wanna report a bunch of problems that I've found so far:
First off, the track is European, not North American. The differences here would be spikes instead of European style abutments holding up the rail that you have used.
The trackwork is pretty rough, and I'd recommend looking into making the curves smoother and more gradual. Careful use of the straighten track tool and careful asset choice regarding bridges and tunnels would help with this.
The tunnels (most notably in the famous "Spiral Tunnels" portion) are of the wrong type, lacking the distinctive retaining walls among other features. Also, the trackwork here is rough as well due to a snap to grid tunnel being used in order to ease the process of punching and covering up digholes. This really detracts from a pretty famous scene, so I just thought that I'd let ya know in case you ever wanted to correct this error.
Something that's also fairly distracting is how the same tree seems to be used over and over and over again. In real life, even the same species of tree will have variations in height, growth, etc. On the route, it seems that the trees weren't even rotated, which again detracts from the scene.
In many places the wrong types of powerlines are used. These can easily be solved as well by a quick DLS search.
The texturing, while in some parts very good, is also lackluster in many, many areas. Texture rotation should be employed while laying down textures, and the tiling effect that the neglect of this tool brings really isn't pretty on a route.
Try for some variety in shrubbery, as that aspect of the foliage seems to become a bit redundant on the route as well.
The gradients in some places are pretty out of whack too. On the loop (again), the gradients were more of a roller coaster than a continuos downward slope. I found this especially disappointing because handling trains over the pass requires the gradients to be in check, and if they aren't then it leads to a poor driving experience.
There were a few more problems that I found in a preliminary flythrough of the route that I wrote down somewhere but can't seem to find at the moment due to the migration of my school books from my drawers to my desk. I'll be sure to update you when I find them though!
Mostly, I think it just needs more work. Attention to detail is key when route building, and it can make, or unfortunately (in my opinion, in this case) break a route. I can't speak to the full version of the route, but I was somewhat disappointed by this route (which is pretty close to my heart as my dad once traveled to Calgary on a weekly basis, and I was able to observe many of these locations myself), especially for the price.
Keep working on it though, with enough practice, you might get somewhere!