Assigning custom attributes per vertex in editmode

Currently 3.2.0 (881c5660326f) there's no way to assign integer attributes per vertex, to be used with geometry nodes, which is a MUST for more complex art-directable procedural setups. It's only possible to assign such values via geometry nodes setup, but not in edit mode or any other mode that requires user's interaction.

The only workaround I have found is to use vertex group weights with really small numbers, then multiplying them and rounding them down.

I've made this quick mockup showing, what Attributes tab could have (similarly to Vertex Groups tab), so it would be easy to add certain values to selected vertices (or other domains)