Definitely agree re: different product categories having different needs.
Adding different product interactions for specific parts of the info hierarchy is a pretty common thing, across navigation design, landing pages, microsites, that sort of thing.
These things will depend hugely on what kind of user journey your entity or organisation addresses.
Luckily for us, it keeps us in a job! :D Ping me if you end up writing a similar case study, it’d be great to compare products. Thanks for writing back!