I'll gladly pay 20 bucks for track DLC when at least all the existing tracks are of the same standard (all night/day and weather). I'm not encouraging a developer to deliver more half-done work.
Most of the original tracks (high speed ring, trial mountain, etc.) were not made to race on during the night, additionally majority of the ones without a time change, which are actual real courses, are also not typically raced on during night hours.
Its pretty sad, if you complain about the game this much why not just sell it and buy something else, maybe a programming book so you can make a better game, right brah?
Back on topic
Id love to see some more vdubs, specifically the jetta and passat, hopefully with all the different engines as well, TDI, VR6, 2.0T etc.
Hell, i would pay 20 bucks just for a TDI pack, that included the vw TDI lineup (Jetta, Passat, Beetle, Golf, and Toureg)
as far as tracks, i'm pretty happy, id love to see pikes peak return, I would also love to see some more mountain tracks to satisfy some of the drifters etc. though that is unlikely.