Maybe an other head producer in the game.

Perception is reality. The new hemi stuff is very popular, fast or not( listening to you)
Barton, Arrington, Bischoff’s, big shops are specializing in that stuff. They aren’t dumb either.
Go to any big Mopar event the promoters are falling over themselves to create more classes for this stuff. They are a dime a dozen, tons of people have them and want to go to the track with them.

If you were 30 years younger would you swap a Hemi in? Even the much loved G3 Hemi?

I wouldn’t do an NA Hemi then or now no matter how popular the general public thinks they are.