The responses to this thread perfectly illustrate why it would be impossible to please everyone with each of these updates.
GT7 is a game with a global audience and car culture isn't the same everywhere - to us Europeans the Peugeot 205 GTi is an icon, as was the Cossie added a few months ago, but I can totally understand the bemusement of American players at cars they have likely never seen or even heard of as they weren't sold in the States.
And, if you look at the Japanese-language comments under Kaz's posts, they're often asking for 90's and 80's JDM, particularly kei cars. Most of those I've never seen in real life - I only know they exist because of older GT games!
Then there's the vocal community asking for more modern GT3 and LMP cars. It's a nigh-on impossible task to cater for everyone with the limited development time available.
(What is baffling is how often cars that no-one has asked for get added, like the Afeela, Himedic, VGTs etc. I must admit I'm Unimog-curious but it would have been way, way down my priority list.)
My pet peeve is the lack of British cars. No Lotus, no MG/Rover, no Vauxhall, no pre-1980s British Fords, just the one TVR all on its lonesome. It does sting a little bit especially when PD is making quite good progress adding every iconic French car I can think of.