Huge improvement with or without the bottom lip removed. I will say tho even tho a non-rectangular grille looks better, it does look less iconic "Z" in styling.So I changed your render up a bit.
Removed the bottom lip, added a "vent" to the side crevice, brought down the front lip a little, and smoothed out the harsh line around the grille corner.
I think it's okay to have new styling features though. If you look back, pretty much every Z after the previous added new styling which in a way makes a Z what it is. I think they were too tunnel visioned on trying to make this Z Proto look like a combination of all the other Zs that they forgot to add new touches of styling that makes it look more attractive, aggressive, and stylish.Huge improvement with or without the bottom lip removed. I will say tho even tho a non-rectangular grille looks better, it does look less iconic "Z" in styling.
I definitely like it better with the colored roof.What do y'all think with the same colored roof?