I'm currently working on a redux variant of the ATP Engineer, Soldat, and a finalization of the Agent, including agency core variants of the ATP based on official descriptions of them from PN2. The release will include all 3 variants of the Agents, and the agency and core variants of the ATP Engineers and Soldats.
I've decided to keep the base style the same as the original sprites, -even reusing and shading the mask cause I know I can't redesign it- just enhancing some things, like making the suit look more like a suit, making the feet colored closer to dress shoes, shading masks and goggles, etc.