3a pro user here.
You’re comparing 3a pro design with 3??
3a pro had much better design than this one. The only thing which is off in that design is the flash placement. I like the camera placement and the camera bump. Since the telephoto is placed in the center of camera bump, you can hold the phone with two hands for stabilization and click macro images better. And the bump, That’s where finger rests while holding the phone.
Look at 3, telephoto lens is placed in the corner. You can’t even hold it with your two hands to click macro photos. You have to consciously avoid holding the phone around the lens. Everything is way off in this design.