This extension sounds really cool :) I'll definitely give it a try in near future.

However, now the only thing I'd need is a way to define compression for JPEGs (or PNGs) when exporting to PDF. I often use Inkscape to annotate figures, which are then exported to PDF and used in LaTeX documents. And the problem is that exported PDFs with embedded bitmaps are really huge. OK, I usually solve the "problem" by running figures through ghostscript, where I can define compression etc., but it would be much handier if this step was not needed at all.

Thanks for this extension :)

Rok