I'll agree with you on the Tangerine Scream, a little out there for me.
And I'll go so far as to say I agree with you on the FWD aspect. Before my '03 zx3, and now '03 SVTf, I drove v8 mustangs. I miss them. Badly. I love the focus, but its missing something. And this reason alone is why I'm having a hard time thinking about a new car. No RWD sports sedans offered by Ford, its either Mustang, or SHO, and the sho is too big and Mustang has more or less useless backseats. The RWD sedan platform from Australia (Falcon) would fit the bill (4.0 i6 turbo please!) but we won't ever see that here.
Thought about a used Pontiac G8? RWD, LS7, etc. May not have the MFT and other tech the ST would have, but it is RWD. While the BRZ, et al, interest me, they are on the smaller side, and from all the reviews state under powered. They will out handle a 5.0 Mustang.
Do you have a gas mileage requirement??