You're right about iracing acer, most races there are about 1 hour long. They have those every day though, not one every week. It's like our quick races for how I see it.
The world championship (F1 series, not nascar) has races just as long as real life, just like we did last week (which i really enjoyed). If they were to make a "gt world series", I'd hope they'd make races just as long as the real ones. From what i know, in iracing you can't do driver swaps, which is what is holding them from making something like that i think (not sure, just throwing it out there).
The nascar series they have is 50% the length of the real races for example (or about 50%...getting confused with the other series they run, the 34 races one). I'd love to see that one turn into a 100% length race for example.
In iracing they have "special events", like the 2.4h of daytona you said, the daytona 500, indy 500 (that we had too), the pocono 400 next week etc. Those races are full length races, and they are made as special events. I'd like to see more of them in SRW too. At this point, I'm starting to think that 1.30h is a good length for SRO races, but we could have like 1 "special event" every month or so, simulating a real life event or something. Maybe we don't have the right cars and tracks yet, but I'm sure SRW guys could look into it and make it happen.
From the poll it looked like there are enough people who like endurance (2h+) races, so I think that these special events could actually have a good player base to hold them up. Maybe not as much as SRO events or normal challenge events, but not even 10 players only. The 14 cars limit is something that will stick with us for a long time I think, but as I said many times I don't see this as an issue. In my opinion we can deal with a long race without many issues.
What do you guys think about something like this?