Well, I tried documenting accurately, once, and it didn't really workout quite well for me at least. First, it seems too intense because mainland has so much to it, that it becomes too addictive if I don't put some boundaries to my travelling, like a game. It becomes too intense that it coild engulf my RL, which I didnt really prefer. Next, mainland keep changing and changing. Other than that, many residents do like to know mainland 'feels', but its just too broad and different for each residents respectively, that it feels too tiring for us travelers to document to their needs precisely. It may feel very heavy to document each and everything about a place along the roads for all the residents to benefit, when many of the infos aren't something we would love to have for ourselves. Tips : Always do what makes you feel happy, and people who wanna take info from you, would do it anyways.
Anyways, after some research and time I gave to myself, I did figure out my own style of travelling and what I really wanna do; what I really wanna document. I'm storyteller, thus, I travel and alter the journey and info according to what I feel like I wanna tell, into a story, which might benefit residents, though I dont really know. I do take a brake after some travelling, to organise the data and sorts, before I do post it on my blog(which is currently empty now; deleted all previous 'not mainland travel based' posts, which is all).
I don't really know if I would be the best target on getting those infos...but you could try my website for sure(you could get it on my inworld profile. Will be updated soon). And if you think you have those infos, or anything at all, I would say, quoting an old friend of mine @Christhiana , Don't think too much on what you gonna do but just do it if you feel like it. You say about the posts which might get boring and stuff...dont worry much. If you feel its boring, maybe eliminate it? Curate it the way you want it for yourself, and you'd feel very happy in sharing it, trust me.
Post those info you've wanted to, at a platform you'd love. If you think you'd love to start a thread, I think I might jump in the fun, cause I'd been thinking about it too. As for the photography, I might help abit, as I do have a eye for angles. Hit me up in-world if you need any help.
Anyways, Good luck!