>>96286850
>Is there a rules compilation similar to the 2e Battle Bible for Rogue Trader?

Yes! It's a book called Warhammer 40,000 : Rogue Trader . You don't need anything other than that to play, although I do most strongly recommend the Realm of Chaos supplements.

In all seriousness, I've found that most of the rules adjustments from white dwarf are not changes to the main text per say, they're more often additional special rules or equipment for specific armies. Things like Harlequins ability to make an extra move past an opponent as they fight them in close combat, or improving space marines toughness and weaponskill when they're wearing their powered armor. As well as more organized and proscribed army lists for most factions, namely genestealer cults and harlequins. These can all be found in the collected volumes "Compendium" and "Compilation". Not to mention the famous Ork books, and the aforementioned Realm of Chaos books

Once you get to the point where they started changing things like how combat and vehicles work you might as well just play 2nd edition because the spark that makes it uniquely rogue trader is gone and it feels too streamlined.

Keep it in the 80s.