I made a simple mind map comparing GTR2 to my favorite Race 07.
Maybe it can be useful for future update ideas?
GTR2
+ better modding capacity, more things "unlocked"
+ Pit crew, safety car, formation lap, change driver, night racing, car lights pitboard
+ More championship options
+- Similar physics (haven't tried it much), cars could probably be adjusted to what you prefer in setup. What is the thing with the simplified setup that is in the game? Just a shortcut that applies the other standard setup options gradually?
+ Driving school (not necessary but a cool thing)
+ Crew chief and other new things
- No windscreen wipers
Modding:
- I think the <HIGH> <MED><LOW><EXP> in .cas files is more annoying than just using LODs.
- Game crashes when textures are missing, at least in tracks?
- Don't like the .gtr packing very much, even if it can be done only in final release.
Are there any downsides not to pack the files other than disc space?
Race 07
+ I prefer this UI, but I think most people like GTR2 better. Probably depending on which game you had first?
+
The game looks better in my opinion. I think it is because of the fresnel shader.
GTR2 is not bad, the "cube map ...grayscale reflect..." can be used for good metallic effect, but I use that in Race 07 too.
+ Animated windscreen wipers
+- Similar physics, cars can be adjusted to what you prefer. Nice and user friendly setup.
- More hardcoded and some options are turned off
- Less cool things like pit crews etc
- Less championship options
Modding:
+ I prefer to have the files not packed, so it is easier to see what is there and to replace them. Not that it is hard to pack the files, just an extra unnecessary thing to do.
+ I have found some extra things to add to the .hdc file and edit in talent files to get more human like ai. Not sure if all of them can be used in GTR2?
I might try to convert a car or two some day to see how it works.