You might have inadvertently provided me with my answer to this question, Paul: Weapons of the Gods. The lore sheets are a brilliant bit of tech that I can’t remember other games having picked up in the same way. From what I can recall from reading it (never played! Don’t ask me to review it!), it also had the roots of Exalted 3e‘s combat engine.

As for Runequest, I hear you. Gaming in any long-established world (Glorantha, Forgotten Realms, Tekumel, arguably the WoD) asks the players to walk a lore minefield. It also requires that the GM be the most knowledgable fan of the material, which isn’t always possible.