I’m missing 3 things in WDM Pro:
1. Seo options per download page(tags/description), not much but will make it to find easier by search engines
2. Search tags – additional option for download, so people will have possibility to find what they are looking much easier(i belive there was something like this in Download Monitor)
3. More than one external link per download – i can add more than one package for one download page, but extended links are limited to one, would be nice to have possibility to add more.