After some work on the system template(s), all of the Wiki's system pages now have v4.88.1 navmaps on them from the game and FLC taken from here. They seem to be working like they should for all system pages, and should be easier to update and thus more reliable than the JG/JH location table.
Other news for v4.88 is that all the commodity and ID pages should be up-to-date, making us about 17% done for v4.88 with 461 pages updated so far. For those who are following along at home and want to help, we've also got a relatively new code generator guide and an intro page with useful guidelines and information for updating the Wiki on them.
EDIT: Feedback on those - and anything else Wiki-related, for that matter - is of course as welcome as ever. : )