A digital version of the map and manual are mandatory, please add them, will be awesome.

THIS

And that "goodies" can be easily found online is some HD scans. PNG and PDF. Same for manuals - PC US, PC UK, PS-NTSC, PS-PAL.
And PC French manual, and French PC version (authentic copy) also can be found easily.

Harder to find is PlayStation localised versions (FRA, DEU; JAP one is available on Internet Archive) manuals.

One real goodies thing, BradyGames Secrets (walkthrough) guide. Also can be found online. But this is not needed in catalogue, of course. Well, or needed - but only if Square Enix EU and BragyGames are OK with that.

You are right. But included is better jojojo

GOG too lazy nowadays. Check another games in the series. One miss FRA version (BO2), one miss FRA manual. So last two games have it. Did they have it as downloadable? No, it available only as part of offline installers.

So even if they have necessary files - they too lazy to add that. We can wait it for another eternity. If anything they want add - they add it on release in this days. Trying to submit them something after game release - lack of luck.

Anyway. i can easily find right now everything a mention above. Old-games ru, abandonware france, Internet Archive, replacementdocs and some console oriented game database sites for PS1 manuals
here the hq map scan as image file
http://www.abandonware-france.org/ltf_abandon/ltf_jeu.php?id=743&fic=liens
And somewhere else i get it as pdf.
LOK Wiki's, The Lost Worlds, Nosgothica, Dark Chronicles and etc. I prefer actually ingame locations edited map:
http://nosgoth.net/bloodomen/images/BO%20Game%20Map%20.jpg
That map show that game actually very small. Unfortunately.