Even the updated Porsche & Mercedes GT3 models would be welcomed. Audi and Bentley got a refresh/new model, why did these not??
Most likely due to the agreements signed when they first modeled the cars. Merc & Porsche probably wanted more $$ to be updated. Audi & Bentley either didn't care or allowed updates as part of the original agreements. Someday you will learn, my young Padawan, that Lawyers often have as much to say about updating cars as the creative teams.