I have never liked the looks of the X, the S has always been the best looking for me with the new nose and at first I thought the a 3 was little off in proportions but after having owned it almost a year now it seems fine.
The Y for some reason that I am not sure just seems awesome to me, maybe its the stout look, like a Hot Wheels car in real life, I really like the smooth lines and never have been an SUV fan at least for looks, I will be buying a Y just need to drive the crap out of my 3 so when the Y comes out I can convince my wife "this one is wore out, we need a new one!"
On the other hand people keep complaining that Tesla's are boring in their design and to me they look good, there is a rendering on Top Speed of what someone thinks a 2022 S should look like and while it is not bad it does look like the Fisker and Kia design teams got together with all those chiseled angled surfaces.