> resulting in lower information density as you get towards the inner grooves

It's actually the opposite: highest information density (musical notes played per surface unit) is in the innermost grooves.

Since linear velocity is lower in the center than the border, the size dedicated to each piece of data is larger in the outermost places, which may increase the quality of songs placed there.

I don't really know if the machine making the disc is precise enough and if the human ear is capable of hearing the difference.