At the moment downloading from the "direct" link is not possible and we can not offer any workaround for this.
You can only use the standard [url]
I will forward your suggestion to our product management. Such ideas are always welcome, although I can not promise when or if this Feature will be implemented, as the decision is based on public demand. Nevertheless, your feedback is very important to us as we want to continue to develop TeamViewer based on our user's needs and demands. We will be happy to inform you about realization of this feature.