That’s funny you say that cause I’ve always thought the taillights look super over-engineered. They have that extra lip that sticks out in the middle that adds this layer of nothing to the aesthetics…As far as I'm concerned they can 1:1 re-use the Mach-E taillights. Together with the double brow soundbar they are the single two elements of that car that are worthy of the name Mustang.
Third picture reminds me of the tI doubt these sketches are super accurate to the actual design. But I just though it would be fun to speculate about how the side and rear could look while we're all waiting. The perspective is a bit meh, especially the rear 3/4s sketch. I also prefer the sharpness the the upper left side view sketch over the other side view sketch in the middle, which needs better proportions to work. But it still shows the general shape I'm thinking of.
Number 3 pic looks like the tail lights of an earlier post with stang ode in it. No offence to anyone.