As I'm the author of this mod, I'll respond to your well expressed frustrations with it.

I had a client, a print shop, that wanted to explore having an eCommerce site. I used ZC to build a pilot for them. Wanting to show them how customer uploads would look, I created this mod. Turns out they didn't go forward with their plans, so I had no immediate incentive to refine it into a full-featured mod.

Nonetheless, in the spirit of open source software, I contributed this mod to the community, even though I knew it wasn't complete. One possibility was that somebody else would build on my work and add major features to it.

I'd be willing to discuss doing more work on this.