Legitimizing ('canonizing' is an absolutely awful and borderline offensive word to use in this context) non-vanilla factions will only lead to overall drop in quality of factions played on Discovery.
Every single non-vanilla faction, with the exception of Gallic ones, that was incorporated into Discovery storyline over the years was either bland, poorly thought out, powergamey, edgy, unreasonable or a combination of the above. Indeed, one can easily estimate the amount of times vanilla lore and vanilla factions were complained about compared to non-vanilla ones and the comparison is not favourable for the latter.
Further, this will deincentivize reviving nice and interesting vanilla factions in favour of people trying to inject their power fantasies and self-inserts into the canon.
I think this is a terrible idea and should be abandoned.