[Herbert Wirl]

It's not so easy identifying who's to blame.
Everybody is racing at the limit and that's where small causes can lead to disaster.

Also often there isn't only just one offender but both drivers misjudged the situation leading to contact.
Example: Who's to blame if an unexperienced driver brakes 50m too soon and the leader slams into his back?

In the end everybody is in the same boat and will have to learn to race clean and not sniff the exhaust
of cars you haven't followed for a few laps (and still then errors can happen).

The rating algorithm needs to account for:
a) mass crashes
b) evolution of racecraft

a) Like in Inti's example if there's this one race in which you get smashed by everybody in the T1 accident it's not the norm and needs to be matched against the usual performance. It should still have an impact on your rating, but shouldn't blast you into oblivion.

b) The aging mechanism needs to be set up correctly to punish contacts but also needs to disregard things that belong in the past.

And of course there needs to be the possibility of reporting somebody.