TS4 Royalty & Legacy Expansion Pack

I am really hoping to hear more about the "legacy" aspect of this EP. Does this mean extended/editable family trees? Or is it just a buzz word they wanted to use with Royalty?

Because even if royalty isn't your cup of tea, would extended manageable/editable family trees in a non-CAS screen (which can break/cause issues in game), appeal to you? Would you get this EP if the "legacy" aspect is customizable and not just royalty/royalty career focused?

I can see lots of potential of this pack if "royalty" and "legacy" are both separate as well as able to use together. Imagine if vampire siring was shown as well as birthing, for vampire lineage. What if you are someone who plays an "heir" but lets the rest of the family/household run on autonomy, being able to outline and plan via a family tree, and have extended "titles"/naming as well as extended family designations could be amazing for storytelling. And lastly, connecting cross pack, and possibly gallery households for Sim lore like the Goth/Crumplebottom/Bachelor/Caliente Family Tree(s).

Anyways, I am curious, concerned, and hopeful on this XD