OK, it's probably an exercise in futility, but the official way to get cameras and lenses added to the database is to email the request to
cameras@pbase.com There is no evidence that The Management(tm) pays any attention to these user forums -- of course there is little evidence they pay any attention to email lately either.
In theory it is also useful to supply links to a photo and/or specification of the particular piece of gear.
DaveT