So annoying spending hours trying to re-create something and failing, only to turn out it's something to do with their firewall or something. Or something so bizarre it only happens when the stars align. An old colleague used to say "ahh that's a subtle one" when we would find the cause of incidents like that. It's stuck with me because 'subtle' is a good way to describe it.
I think also in this case you have two things sort of out of the devs hands anyway. In terms of what Ruben is talking about.
Firtstly, rF2 give users the tools to setup their own servers. It is up to the user to then host it properly. So in the case of DDoS or whatever, that is infrastructure setup which is out of S397's hands. iRacing have spent years mucking up large events until they finally have a handle on running stable servers. If you want to host an iRacing server you have to rent it directly from iRacing as they don't expose the tools to create your own. On the one hand it's extra money for them. On the other it is maintaining control over the quality of hosting to ensure it's configured properly.
If the problem was DDoS then I really think it's not likely to be an issue for most people. The Le Mans VLMS finale was a huge event and one that would look worthy of attack to some little scrote. So I guess if that was the issue, next time out the server could be better hardened for that race. But likely no actual development needed in rF2 as no one else sees these issues.
Secondly, there was talk about the hour by hour weather scripting plugin having issues. If you want this granular control over weather in an official event - let's face it, the inbuilt scripting is fine for shorter races but maybe too coarse for 24 hours - the current option is to use a third party plugin. So I guess rF2 could try to protect against this for next time by expanding the built in weather scripting? Avoiding the need for the plugin altogether.
But yeah, even in this example I bet it's a time when people are wishing they had more logging to help recreate. You don't want to make a guess and then worry next year if the same thing will repeat.
This is an interesting point in bold - and one that people often (always) fail to reference - iRacing have had many, many issues with big events that they learn from and use to make improvements and move forward to where they are now (still not fault free all the time it must be added) - LMV is in the 3rd year... and last year was near perfect....