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 10.7
+Fixed Nines Chateau trigger and sweeper greeting Nosferatu player.
+Restored Potence and Celerity view particles and improved others.
+Corrected getting secret from Christopher and flirting with Nadja.
+Fixed Nosferatu not being able to exit after second museum visit.
Added missing solidity of sewer and temple models, thanks Norrwin.
Corrected tutorial MAC-10 loudness and minor map and text issues.
Fixed blocking Confession barkeeper and locking Fu Syndicate door.