Are you planning this as a current day track or a period (late-90s) piece? If the latter, you could always use Canadian Airlines...
Looks like you've poured in a lot of work to upgrade the circuit, and it looks great so far. When you shift gears to the Lidar version, do you think you'll redo some of the buildings (ie. the Science Center, Arena)...having spent a lot of time on the 3R buildings I can say it's a lot of work, but is really rewarding.
Now you have asked me some tough questions

....
Whats happened is that this was always intended to be as representative of the actual 98 track as possible (for a 10 year old conversion). Really it was going to be a shot in the dark to see if I could pull off some modding in Assetto. Ive done coding and retexturing for other games but Ive never worked with Blender before.
Whats happened is that the way AC works with AI... the pit road will always give a wrong way warning if built to 98 spec.
So essentially, there is no real way to make the fully accurate version. So to your question, the fact I couldnt keep it truly accurate led me to make a few inaccurate changes such as the lilacs etc.
The next challenge is the the races are so old that we don't have the HI def versions to watch. I watched a 96 race in van on youtube a couple weeks ago and its not the greatest views and not great on board. I even had trouble finding a hi def version of the Players logo. Most of the others were easy though.
I double checked and Westjet was founded in 96 or something so "technically" the company existed or I likely would have gone with Air Canada. Canadian is interesting. I don't remember that airline...
Also I have had to update some portions of the track with some vehicles that may not be period accurate also because the originals really stood out as making the game look dated in comparision to all the other newer updates and obviously the beautiful indy car models.
So the short answer is that I take it into consideration and try but its a bit of a losing battle on this one.
For the Lidar version it would be scratch, but Im not a modeler or a texture artist so it could very well outside the scope of my ability.
Ill take an honest run at it but Ive never been the strongest creator and am typically better at saying, hey this would be cool and adding it on...
That being said... if I could pull it off, it would essentially allow for all 3 layouts, the pre 98 version which ran along BC place, which is the one I really want because I played it on CART RACING 95 with a Mad Catz wheel strapped to a lazy boy on playstation 1 and it was awesome, the 98 version (which will always have the wrong pit road) and the 99 on version which will still have that problem but they added the extra turn in the last corner as you passed pit lane...
That would be ideal so in that case, having the buildings means being able to use them for all three layouts.
Also the LIDAR I can pull is from 2016 or 18 I believe so its impossible to get the actual road Lidar from that time. Annddd part of the Lidar is missing because it looks like the back secton of the track on the far side of science world is was purpose build as part of it was a park so I will have to take another like Roads Lidar and dummy it in there.
So there are a lot of gaps to making it perfectly era specific...