The challenge is still down, so I decided to give the MG 1600 a go. Go for the KSP setups or whatever you like and drive it. It's fun because it absolutely does what you want. All you have to do is listen to the pacenotes, get your line right and point the car in the right direction. Even the infamous french stage Bisanne is easy with that car.
If the new challenges prove to be a(nother) disaster I will suggest to use the MG. Then we will propably see a lot more finishers and the fights will be a lot closer.
Or why not a S1600 class challenge? S1600 addon cars should be pretty comparable to the default MG. There are only 4 (if I didn't forget some car) S1600 cars released and those who don't want to install any of them can just use the MG then and just shut up even if it turns out to be slower compared to the addon cars. Your choice. Anyhow, these FWD S1600 addon cars should at least have more realistic physics, that MG has just always felt weird what comes to handling.
The setups are called something like "0slot0_Pwnagesetup". If it is an MG setup you'll have to rename it to 2slot0_Pwnagesetup to work. the 0 after slot is exchangable with 1 or 2, it's the number that controls in which of the three setup-slots the setup appears (thus it'd be stupid to have two different setups with both 2slot0_, as they would appear in the same slot). The first number controls on which car the setup will be listed. 2 is the MG if I remember correctly. If it isn't, then create a setup ingame for the car and it'll apprear in the SavedGames-folder with the correct prefix.
And now go and never again complain about the LFS abbrevations in setups!
The realtime server/client plugins require a little bit more organization to get more than two people in a rally.
I don't mind though if someone wants to set up one for testing as long as we can somewhat agree on the schedule. I can keep updating my LFS RBR Otter Challenge site about the upcoming rallies and stuff.