It would be great to have inclusion lists, similar to exclusion lists, to allow certain content for kids profiles to overrule the standard filters.
In the current state of the family account and kids profiles, it appears that certain content needs to be shared with each profile and that songs labelled as explicit cannot be shared at all.
I think “explicit” lyrics cover a wide range, from the occasional unbleeped swear word (where acceptability can depend a lot on culture and language), to outright insulting or discriminating lyrics.
I do not expect Deezer to do any fine-grained sorting for this, but having the opportunity to handpick certain artists or albums would allow to do this individually and leave it in the parents (Admin accounts) control.
For example, my kids want to listen to certain songs which they pick up from our listening habits anyhow, and now I do not have any choice apart from disabling the kids filters altogether, exposing them the full unfiltered range of explicit content there is.