You don't need to race online to understand how leagues work, what their shortcomings are, and how they could be improved.
I've done a tweak that puts the demo cars at the LRF level of performance, effectively making a 6-car class.
It would make for some fun racing, since those tweaked cars are less difficult to drive on the edge, but the only way to release the mod is for someone to integrate my mod tools into LFSTweak.. which no one has volunteered to do yet.