Comment 6 for bug 171054

In my understanding:
Save = you can open the file again in Inkscape and expect most of things to be still editable
Export = you don't know whether you will be able to change something afterwards

My opinion: Allow to export to ALL formats (bitmap and vector alike) and put only formats which preserve most of the vector information in the Save dialog.

While this might seem like an UI duplication, it's not - exporting is definitely different from saving. Additionally, batch export to vector files (like PDF) can be useful too - consider i.e. artwork for a book in LaTeX which you would like to keep all in one file, and then export to separate PDF images for processing. Having too much options to choose from can be solved too - just allow to turn off some of the formats in the preferences menu.