The problem is, different people have different priorities.
Some people are happy once it can drive nicely. Others are happy when it's in-game and looks shiny, but drives like crap.
There are so many levels of 'ok' depending on who you ask.
All we can do is hope that as better cars are released around/post v0.9, they act as inspiration for others to aim for that level of quality.
Many cars on Traciontresera are actually old cars re-uploaded, hence the missing shaders or bad car.ini files etc...
A car or track for Racer today isn't a trivial thing to make a good job of. I'd say, if you worked solid 7hrs a day, 5 days a week, a car would take a good month to make... thats without testing or messing about too. There is just so much to do!
And that is assuming you don't have 'issues' during build, ie, spend weeks messing with a shader issue, or physics issues etc
There is no point having a panel, just take each car as it comes, and if the author wants to improve it further, they will ask, and we can help... if they don't ask, chances are they don't want to make it better?!
I have about 60 cars here that are crappy private conversions, but they have nice sounds and car.ini files, because that is what I made them for, for trying out car.ini setups with the appropriate looking car.
I won't release them though, because they are there for me only.
I assume others do the same but only for the looks, and have rather pants car.ini files or sounds. Each to their own. I won't release what I tinker around with because there is no point.
A car worth downloading for me, is one that is finished in every way, or at least developed somewhat in every way, even if it needs more work.
Dave