Since my last post I tried using this macro too, unfortunately it wasn't what I had expected (it's still a great macro), but like you I think what I expected was more control over exporting one specific file into many different formats each with they're own set of options. When I provide the client with say a logo, I will do so in different formats for his in-house docs, web and printing (e.g. wmf, jpg, tif, pdf). I would also think it helpful if there was an option to open the conversions to inspect before sending on (maybe an import option after all the converting). Preparing that cd can be monotonous and timely.
I'm no assistance with your question, but please keep me informed on your discovery.