A few months ago i would be of the same opinion, we need more tracks.
But something has happened and the fact that the same thing has happened in the various games i run suggests its not a coincidence.
I've narrowed it down to the following results of my experiences.
In Toca RD3, and even RD2 i found the number of tracks appealing, but through the time of playing i founf i was really only playing the same tracks, around 25% of the total number of tracks.
Trackmania Sunrise and Nations has an unlimited number of tracks from its community, so many in fact that its pretty much impossible to play them all. This lead to having that somewhat feeling of constantly missing out on something for the game. As such i stopped playing it when Toca RD3 came out.
LFS has only a handful of tracks, yet im not getting bored of them, i wondered why and its got to do with the quality of the track over the quanity.
We will always want more than what is available but we should try to look at it differently. Be thankful for what we have got. We could only of had 4 tracks to play with.
Releasing the tools for us to make tracks will certainly lead to fragmentation of the game and its community. I've only been here for a short time yet i can already appreaciate the tightnit feel of LFS experiance and i for one do not want to see anything changed.
That being said i am sure there's an opportunity for the devs to bring in extra tracks though another means all in the name of expanding the game and its experiance. What that may be i don't know, an add-on all-together maybe, i don't know.
For now though i'm more than happy with my purchase of the game and its content and shall remain so for a long time.