That's why "general knowledge encyclopedia" isn't a good term.

If you mean general knowledge in the sense of "knowledge which is generally held," or even "knowledge which is generally accessible," then a general knowledge encyclopedia wouldn't be that useful, by definition, to most people.

Crucially, it would be useless to the people most likely to use an encyclopedia!

A general knowledge encyclopedia should aim to curate knowledge with no discrimination in terms of category. This is what Wikipedia is, and it's really good at it.

I think there is room for improvement in linking topics and subtopics, even potentially in-line within an article. See a word you don't understand? Click the "+" next to it to expand a sentence that fills its place syntactically and semantically!