Now that the focus is on league racing and streaming, what about making high res skins freely available for everyone? You have free global server service even for demo users, S3 users have all those great community made mods, but they need to pay for community made skins. People who paid couple euros for skins in the past won't be mad at the devs for making it a free feature. You talked about using the triangles in relevant areas to make the cars look good, but then most users see cars with skins in low quality. I believe there's also reluctance in making great skins because of this.
1e for 2000 skins isn't the issue. People don't care to add balance to view other people's car skin in full detail, in the end its LFS that looks bad. It's noticeable in the streams.
You could still keep the low res skin feature as default for the case of low end PC's and even introduce higher res skins than we currently have. And still keep the warning about performance impact when changing the setting.