I'm not trying to rain on anyone's one make parade, I just want more races per day so that everyone is happy, no matter which class of car they prefer.
For me, the Group races are the heart of GTS, but I admit that it may not be the sole focus for PD. I just want options, because for instance today my option is either to go do some time trials or play another game. And that's probably not what PD wants to hear, assuming they want to retain their online player base.
More races sounds fun, but I respect the argument that it would dilute the player base, and also the limited choice pushes people to play outside their comfort zone. Not going to get me racing GR1 mind, however hard they try (unless they put le sarthe in hah)