I kinda agree with most of what you are saying. BUT lets be totally honest here. I truly believe the rx7 can be a stunning looking car and the supra too is a looker but not so much so (sorry guys).
HOWEVER, the first time I saw a supra I was blown away, and my first time seeing a rx7 was yes special but not as wow. I think the reason rx7s are perceived to be prettier is purely because you see them far less. If you only saw a supra once a month if you were lucky, you'd think its an equally stunning looking car. That's my thoughts anyway.
You had a pretty rare looking rx7 i see with the mazdaspeed front (rare and pricey!). The loudness of the rx7 I do miss, with all the flames as well, but I got pulled over 6-7 times in first 2 months of ownership, as police would hear you coming not necessarily seeing you.
I too would like to see and go in a heavily modded supra as I am yet to see how quick they can be. Maybe the next jap meet at ace cafe someone will offer me a show of what single turbo supra is all about (not asking on here or anything )