Have you seen the 5.7 Hemi? With the 8 speed it seems to be pretty much what you’re looking for
For me, both the Trackhawk and SRT are complete overkill and not at all practical for everyday use in terms of fuel economy vs power/performance/price. The regular GC is just so-so in terms of performance. It would be great if they do something in between with this generation. Something with 400 HP, 22+mpg, decent brakes and the looks. The interior is certainly a step up.