I’m in a position where I would really appreciate the ability to add meta-fields to objects that would transfer along with SVG exports. (Long story)
You could write them under a specific namespace along with other SVG attributes.
Besides string values, the ability to store a reference to another object in the SVG would be nice also (i.e. linking functionality between certain pieces)
I’m now thinking of a naming scheme to implement these, but a native support would be swell.