So we get Laguna Seca, five new cars (including the return of RUF), the Lewis Hamilton DLC pack, a Gr.4 Supra in a couple of weeks and a Lamborghini VGT a few months after that. We know a Porsche VGT is coming at some point next year as is the Mazada GT3 VGT, presumably before the FIA 2020 Season kicks off. That's just the stuff we know about.
Haters are gonna hate but personally I've impressed with the amount of support this game is getting over two years after release. Not every free car added to the game is going to be to everyone's taste, but you know, you can just not use the cars you're not interested in.