We do
The '500 is [loosely] "based" on the Indy 500 [logo match? :P] and so we started to base everything that happens [e.g quali system] on that. Where something is not feasible in a Sim-Racing context [e.g I believe they have week-long warm-up races or something like that], we change it or leave it out
Given the recent practice races we feel that we need to change some of the rules to make it no just a good race for the drivers, but also for us and anyone watching. Therefore we modify the rules periodically and/or when issues arise to make sure that this is the case