Not really 0.6J related, more like an improvement suggestion.
Today I've put three new thing to my list "Most annoying things about LFS".
1. 40 FPS limit in garage
Yeah, if there is no cars in race while viewing track it absolutely make sense. But if there is no cars in race and you enter garage or lobby it will be limited to 40. This causes noticeable stutter while the car is rotating.
2. Mouse not visible while hovering unactive LFS window
Lets say my LFS is maximized, but I have other window in front which does not cover whole desktop. Mouse is visible as I'm hovering this window, but moving mouse over LFS it dissapears. My suggestion is to call d3d->ShowCursor(1) as LFS loses focus and restore it to previous state after reactivating LFS.
3. Quickly pressing SHIFT+F4
I often quickly press SHIFT+F4 twice (maybe its something wrong with my keyboard), so I end up in same screen mode. It would be nice to have some debounce there. Better solution would be to invalidate further keypresses until screen mode has changed (no black screen).