Some of the issues you are having with the path road connection is changes made over time - power and the inner voice was written well before road of kings. Add into that the Victorian ages supplement talks about cainite being seduced by humanity and going back to the oath of humanity during that era. In addition the camarilla pushed for humanity and the Sabbat did what they could to salvage the system, but didn't exactly handle it perfectly.

When the anarch revolt happened a lot of road paragons died. The permutations of the Road of Sin are far more interesting than the monolithic Path of Evil Revelations, since the former looks beyond 'you are a demon's servant' (a morality which undermines RP as the right decision is unquestioning obedience to an NPC). I can easily imagine a recently embraced Ventrue Antitribu leaping at the opportunity to adopt the Road of Chivalry, or a faithful Lasombra seeking out the Road of Heaven. In this vein have any of you experimented with using DA content in modern games? Considering how easy it is to justify the old content still being around (Vampires are unaging) it wouldn't be too hard to integrate. There is in-universe justification for the Krainas no longer existing (Kupala decided to consolidate the disparate Paths into elemental Ways), however what happened to the powers that don't have a modern equivalent? Did the Elders who knew them back then forget them? And if not, why can't they teach them to their descendants now? The Kraina which were used by the old Kolduns are still viable (for example, some of the old regional powers don't have a modern equivalent). The same goes for old versions of modern powers. Simply put, I can't really see a reasonable justification for Roads not being semi-common in modern nights.

The Path of Power and the Inner Voice is clearly derived from Road of Kings, but what about Roads like the Equitum (Chivalry) Variant of Road of Kings, for which there isn't a modern equivalent? Did they simply stop existing? What about the Elders who still exist who followed them? On top of that, what about written works on these Roads is there anything to stop a modern Vampire from adopting an old Road from old written material, or a Mentor (such as a Grand-Sire)? Obviously the mass conversion to humanity during the formation of the Camarilla will have cut the Road-following population considerably, however that raises more problems why would someone on the Road of Kings, faced with the necessity of adopting a Path which uses Conscience and Self-Control (the combination required to seem humane to those with enhanced senses) choose humanity? The Chivalry variant of Kings is far more closely related. Mechanically the systems are very similar, however some Roads existed in that period that aren't represented in modern nights. In the Dark Ages Vampires followed Roads rather than Paths.

Vampire dark ages road of sin torrent