I'm sure Aral would love to see what you have. Might be worth PM ing him too.
The only problem is that Aral has not been back here since January 2. That's the last time his account was active. I did PM him before i noticed that though.
From what i remember those 2 need to be merged cause there some files are only in one of them but not the other. There are dups in both sets and agree that needs to be stream line.
BTW i have over 2TB of pdfs for you guys and its not just stuff from TOSEC-PIX Candidates. I even think that there should be a Music, Home Theater, Camera, Entertainment, and Photoshop sub set so we not dumping everything to Multi-format for stuff like Computer Music, etc.
Anyways i hope i can be of some help.
I only gave it a cursory glance while I was testing RomVault. I also noticed some minor inconsistent naming issues, but my inner Monk was able to ignore those. And at least 1 duplicate file not related to the datfiles mentioned.
If you think about splitting up the 'Magazines' section further by subject, I really would second that. But I don't see a way around the Multi-Format group for now. I mean nowadays it's hard to even find anything short of a hammer that does not contain a computer of some form, with firmware to patch, etc. And I'm not even sure about the hammer, but this is getting off topic 
Here is a list of magazines i have in my Music set :
'Music - Books'
'Music - Magazines - Acoustic (GB)'
'Music - Magazines - Audiology'
'Music - Magazines - AudioTechnology'
'Music - Magazines - Bass Guitar (GB)'
'Music - Magazines - Bass Player (US)'
'Music - Magazines - BGM'
'Music - Magazines - Classical Music'
'Music - Magazines - Classic Pop (GB)'
'Music - Magazines - Classic Rock (GB)'
'Music - Magazines - Computer Music'
'Music - Magazines - DJ Mag'
'Music - Magazines - DJ Mag (GB)'
'Music - Magazines - Downbeat'
'Music - Magazines - Drummer (GB)'
'Music - Magazines - Electronic Musician'
'Music - Magazines - Electronic Sound'
'Music - Magazines - Front of House'
'Music - Magazines - Future Music'
'Music - Magazines - Generator'
'Music - Magazines - Guitar and Bass Classics (GB)'
'Music - Magazines - Guitar and Bass (GB)'
'Music - Magazines - Guitar Interactive'
'Music - Magazines - Guitarist'
'Music - Magazines - Guitar Magazine'
'Music - Magazines - Guitar Player'
'Music - Magazines - Guitar Player Vault'
'Music - Magazines - Guitar Techniques'
'Music - Magazines - Guitar World'
'Music - Magazines - Kerrang'
'Music - Magazines - Keyboard'
'Music - Magazines - Metal Hammer (GB)'
'Music - Magazines - Mobile Beat'
'Music - Magazines - Modern Drummer'
'Music - Magazines - Mojo (GB)'
'Music - Magazines - MusicTech'
'Music - Magazines - Music Week'
'Music - Magazines - NME'
'Music - Magazines - Pianist'
'Music - Magazines - Planet Rock'
'Music - Magazines - Polyphony'
'Music - Magazines - Premier Guitar'
'Music - Magazines - Prog (GB)'
'Music - Magazines - Recording'
'Music - Magazines - Rhythm (GB)'
'Music - Magazines - Rock Scene'
'Music - Magazines - Rock Sound (GB)'
'Music - Magazines - Rolling Stone'
'Music - Magazines - Sound On Sound (GB)'
'Music - Magazines - Sound On Sound (US)'
'Music - Magazines - Total Guitar'
'Music - Magazines - Uncut (GB)'
'Music - Magazines - Vaccum Tube Valley'
I know not everything is going be added but this is why i need to make sub-category Music so it doesn't be come a task to find it in Multi-format. Here is also my camera collection:
'Camera - Books'
'Camera - Magazines - Amateur Photographer'
'Camera - Magazines - Asian Photography'
'Camera - Magazines - Australian Camera'
'Camera - Magazines - Australian Photography'
'Camera - Magazines - Australian Pro Photo'
'Camera - Magazines - Camerapixo'
'Camera - Magazines - Darkroom Photography'
'Camera - Magazines - Digital Camera World'
'Camera - Magazines - Digital FilmMaker'
'Camera - Magazines - Digital Photo'
'Camera - Magazines - Digital Photo (GB)'
'Camera - Magazines - Digital Photographer'
'Camera - Magazines - Digital Photography'
'Camera - Magazines - Digital Photo Pro'
'Camera - Magazines - Digital SLR'
'Camera - Magazines - Digital SLR Photography'
'Camera - Magazines - Digital Video'
'Camera - Magazines - D-Photo'
'Camera - Magazines - f11'
'Camera - Magazines - Filmmaker Magazine'
'Camera - Magazines - HDVideoPro'
'Camera - Magazines - Movie Maker'
'Camera - Magazines - N-Photo'
'Camera - Magazines - Outdoor Photographer'
'Camera - Magazines - Photography'
'Camera - Magazines - PhotographyBB'
'Camera - Magazines - Photography for Beginners'
'Camera - Magazines - Photography Masterclass'
'Camera - Magazines - Photography Monthly'
'Camera - Magazines - Photography Week'
'Camera - Magazines - PhotoPlus'
'Camera - Magazines - Polish Film Magazine'
'Camera - Magazines - Popular Photography'
'Camera - Magazines - Practical Photography'
'Camera - Magazines - Professional Photographer'
'Camera - Magazines - Professional Photographer (GB)'
'Camera - Magazines - ProPhoto'
'Camera - Magazines - Rotor Drone'
'Camera - Magazines - Smart Photography (IN)'
'Camera - Magazines - What Digital Camera'
'Camera - Magazines - What Digital SLR'
Anyways i hope this shows you guys what i have for you. Also is there a reason that you remove metadata from the pdfs? I prefer we don't do that if we can.