James
It already is Plan-S compliant :-)
Unfortunately Plan-S requires rather more than a conformant licence. It also imposes strict conditions on business models and editorial practices, not all of which have yet been completely finalised: see https://www.coalition-s.org/rationale-for-the-revisions/ for example.
The best the WikiJournals project can realistically do right now to is announce an intention to conform. So my question remains: does the project intend to become and remain Plan-S compliant? It seems odd that this is not considered to be, and publicised as, a major goal of the project, as non-conformance will be a major setback.
Thrapostibongles