I thought it's more about graphics and lack of VR. The content is great, the cars of AMS are very interesting overall. GT3 is available as good quality (ECC) mod, which is quite common and used online too
I like the tracks of AMS too. Who doesn't get bored by the same eternal Monza, Spa, Silverstone
GTR3 will be arcade, confirmed by developers. Nice screens, but I see nothing to be hyped about. Combining GT3 and arcade physics is like combining 2 most boring things on earth
ACC already does GT3, and it's a simulation