Nichts der Art.
"Einfluß" and "Zusammenfluß" have officially been spelled "Einfluss" and "Zusammenfluss" since the reform of 1996,
Which many adults I know continue to thumb their noses at, to this day (in personal communication, at least). In any case, arguably one needs to be aware of the pre-RSR spelling conventions to have a solid grip on the language as a whole. So I would prefer a reference that made us aware of both variants, actually.
As to feminine nouns -- good call. It's a difficult task to put together reference materials that are both comprehensive (and approachable) and obsessively accurate.