If nothing ever releases a pro version of their third generation smartphone, they should release a larger glyph matrix in the size of a square. Or a larger circle that takes up to four square on the phone, but still remain circular and have more LED lights.
The best use case for the Glyph matrix would be for apps to create a glyph widget around it for their apps. Like a delivery timer notfication (food apps).
Also, for the 4a and 4a pro, I would suggest bringing back the glyph lights but in the form of square tiles that have different levels of luminosity on the back of the phones (glyph tiles). Imagine glyph times that made a breathing animation.