Firstly thank you Daniel for this wonderful addin and everyone in our circle of friends find this extremely useful.
This is my first post and so quickly tried search with keyword powerpoint and found nothing, hence posting to find help.
There are several thirdparty addins to export images/shapes from powerpoint of defined resolution ready for publication but come with a price. There is also a registry hack to improve the export resolution to 300dpi and some vba codes that are tricky for novices (no/minimal knowledge of vba) like me.
So i request the users on the forum and Daniel if it is possible to tweak the xltoolbox addin to have the export option invoked in powerpoint and used it just like in excel to have publication ready figures one prepares in powerpoint.