I think with the increasing popularity of full scale F1 here in the States. I would say the RC world, at 1/5th scale is ready for an update to more closely resemble the newer full scale cars.
The models being offered, even the Genesis F1 car, though relatively new still poses the silhouette of an older version of F1.
I would think, to reflect the growing interest here in the States, which is starting to show the interest seen in the rest of the world for F1 racing, the model company's should update the cars. This I am sure would then spur on a growing number to buy and run 1/5th scale F1 cars here in the U.S.
I can only hope new cars are on the horizon as I would love to see their popularity grow and to run and race in 1/5th Scale F1 events.
Regards
BM