This is request for the WG members to vote on requiring all defaults apps/components in the workstation installation be compliant with the xdg base dir spec.
This is more or less the current status already with very few but high profile components including Firefox and NSS. They could be grandfathered in for now with a time limit for them to be compliant. If more apps were compliant with the spec, it helps in maintenance of the system, especially backups. It would also help convince upstreams to take this spec more seriously if a major distribution requires it.
Prior discussions athttps://lists.fedoraproject.org/pipermail/desktop/2014-October/010979.html