Please for the love of God iRacing, make it so or at least give us a good reason we can swallow as to why it can't be done.
I would love to League BMW, Ruf, McLaren, Audi, AMG and Aston.
Tony says it's because of technical issues, it would lead to lower frame rates. But I'm not sure why it would be much worse with 6 cars rather than 5.
Also, somewhat related, they are planning some changes for the endurance events:
http://members.iracing.com/jforum/posts/list/3437382.page#9547609
I really like the Le Mans and Nürburgring cars line-up. I just hope they add a GT3 car (realistically the Audi) to the 24 hours to have more diversity.
I'm not a fan of the extra time slots though. The only valid reason for them to have multiple 24 hour races in a weekend is load balancing. But if their solution is adding more races instead of fixing server issues then it is a bad solution.
I wouldn't mind 2x 12 hour time slots to give everyone a fair chance, that means that Marc might be able to actually race at Sebring
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It's true that a lot of people use the fastest car in a single class series, which skews the championship in my opinion. There are plenty of drivers who go week by week while selecting the best car for it every time.
I've proposed a limitation in the iRacing forum where at the start of any series, you would select a main car. Then you can race anything but you could only score points (or gain iRating) with that main car. There are more people with similar views so I hope iRacing does something with.