I like the overall look. Better executed than a Mustang and some of the Dodge retro products. I don’t mind the grill but feel like the front end lacks a bit of finishing. Perhaps some small fog lights would break the front corners a bit. The rear is ok - I like how they used the rounded rectangles in reference to the 300ZX.
I agree though that it looks a touch bland. A subtle spoiler may help but please avoid any kind of garish spoiler. The interior looks pretty good. Dual climate probably will necessary or it will be criticized right away for the lack of it. Having a manual will propel the car out of the gate sales wise.
Overall well done. Big car for the brand and key to success if Nissan is to get back to the top of their game again.