The mnemonics really were the main feature driving me away from existing resources and to make my own.
On the questions: I am not an expert, but I didn't make anything up. All data is picked from dictionaries like JMDict/jisho.org. The layout and choosing which information to display how I found best was according to my studies.
On 部首: They're highlighted for each Kanji (back side) and annotated on the bottom right in the full form, but there are no individual cards for radicals.
All in all, the deck features and what makes it different is better described by the guide that I link in the post (which, while interesting, is better suited for the audience which cares about Kanji).
The post itself focused on the building and business part which I think is well-suited for the HN crowd.
Anyway, thanks.