I haven’t experimented with iNaturalist species guides, but your question is interesting. I do like the iNaturalist concept of species guides for local areas which curate the knowledge on one group, one environment or habitat.
I live in the UK. I just went through a set of underwater pictures which I took in Brazil in 2006 with the intention of adding the photos to iNaturalist and developing my fish identification skills. I found that I could use iNaturalist as an identification guide, together with Fishbase. Strategies I used were to: 1. check which order or family I thought the fish belonged to; 2. check which fish (in that group, expanding if initially unsuccessful) were recorded from Brazil in Fishbase; 3. select that rough ID/name/family/order in Explore module of iNaturalist; 4. zoom into the area where I was and select the bounding box; 5. view all records as grid view; 6. select Species to show just one photo per species. This seems to me to be a good way to learn a new area and new group. The same strategy was effective for most of my starfish photos. I think I’m an image person, not a text person, and I’ve never found textual guides very useful for identification.
So, without actually seeing your guides, could what they do for people be done in some sort of interactive or guided way, using the other iNaturalist modules? I must confess that I’m also a fan of Wikipedia, which iNaturalist uses for species accounts (assuming a Wikipedia page exists) so it can provide a lead to the relevant literature for each species. I wish there was an explicit link to WoRMS for marine species taxonomy, but Wikipedia species pages often have a taxonbar at the bottom which connects to other resources.
So could the elements of your local guides be used to complete or create image and text resources elsewhere? Could the information be used to create or improve Wikipedia pages?