This is a great idea but IMO should be done for the love of it, and not let it become a chore for people.
You wouldn't need to have masses of detail on everywhere from day 1. I reckon you could just extend it to give an overview of the series and only put detail where people have it to hand
Agree, for the fun and not a chore, which is why if some information is put forward now, we can start sorting the information - Is why I'm willing to do some of the preliminary, see what we may need. It will be easier that way. I don't think we're talking about a guide as big as the LM one, but along the Handy Hints/campsite/where to eat.