OSM "level:" tag

To allow indoor mapping, the tag "level:" to put on each object is essential

Also the tags
- building
- name
- building:height
- building:levels
- building:leveles:underground
- roof:levels

are important for indoor mapping

Below a detaled experience of indoor mapping: https://forum.openstreetmap.fr/t/cartographier-linterieur-dun-hopital/36016


Is in the roadmap allowing indoor mapping?