Add data attributes to elements for SVG export
But (of course) no support in illustrator for this feature. Worse, if I add them with another tool, then open the SVG in Illustrator, they get stripped from the document entirely. This is just stupid.
Best of all, a data-attributes panel, very similar to the variable panel, but without the redraw bugs. Workflow something like this:
Select an art object.
Go to/Open data-attributes panel.
Click + or select Add attribute from popup corner menu.
Add (e.g.) "mood" with value "happy"
This would not just make me happy, but would also be very useful.