The Unofficial Patch is not really a mod, but while the default basic patch mostly only fixes bugs, the optional plus patch, that can be choosen at installation, is like a restoration project, adding a lot missing content, including new quests, levels, weapons, items, characters, dialogue, graphics, models, sounds and original music!
Vampire: The Masquerade - Bloodlines Unofficial Patch 10.8 RC 3
+Improved the turnstile at Club Confession, thanks to EntenSchreck.
+Corrected trigger, sound and badly lit wall at Hallowbrook Hotel.
+Updated tutorial security guard's voice-overs, thanks to Chalvrek.
+Delayed Vick's arena exit and made Tawni's boyfriend holster gun.
+Added exits to Sheriff roof fight and made his sword easy to find.
Removed redundant or duplicate tools from the Player Mods folder.
Corrected Blade Brother name in basic and Luckee Star body issues.
Restored a line of Mandarin and fixed issues with Nadia in crypt.
Fixed Venture Tower icon and holes and made glass roof accessable.
Reset Gangrel sheet stances and Glaze combat area in basic patch.
Locked endgame Skyeline vents and fixed floating or clipping junk.
Fixed sticky floor, bad camera angles and other minor map issues.
Disabled Arthur's privat computer and movement in the basic patch.
Added sign to Hollywood cemetery gate and fixed name in computer.
Fixed a temple trap trigger and covered bad Society rock textures.
Adjusted cabbie endgame lines and removed Ash sewers auto-ending.
Fixed virus and timer issues on returning to the Kamikaze Zen map.
Corrected Tremere haven condition and invisible tutorial windows.