Alfa it'd be cool without the top of the circles

Bravo Keep thewidth of the z when connecting with The d. I would remove the top either

Charlie Sorry bravo do mean keep it or remove it

Bravo Maybe the bottom you could keep, and remove all the top. If you want to keep the disc on the background i suggest use like a shield and improve the contrast. But keeping the width for the center letters. What you think?

Delta Love this but I see tiny tiny mistakes that can be fixed. 1: bottom outside of the Z doesn't match up with the circle in the background. 2: the bottom left part of the A in the inside has a tiny corner that can be removed.

Charlie I've just posted a new design taking he comments into account. I've used a rounder typeface which I think ties the design together a bit more.