Scars Unseen
Hero
I think I actually like #2 specifically because some of the ability scores do have multiple contexts that might not all apply to the same characters in all circumstances. For instance, with the proposed division, you can have a distinction between agility(save), precision(attack) and manual dexterity(check). It gives some mild complexity to what is otherwise a somewhat simpler game than in recent editions.
And while it may seem confusing, I don't think it actually would be once people start playing for a bit. It's not like overlapping concepts are a new thing to D&D (HP & AC are both RAW representations of your ability to avoid harm), and I think that keeping it all centered on familiar universally recognized D&D terms is better than continually trying to find new jargon with each edition.
As for going back to ref/fort/will, I tend to welcome any move that makes it less tempting to center all of your points on one or two ability scores, and having more possible weak points is one way to do that.
And while it may seem confusing, I don't think it actually would be once people start playing for a bit. It's not like overlapping concepts are a new thing to D&D (HP & AC are both RAW representations of your ability to avoid harm), and I think that keeping it all centered on familiar universally recognized D&D terms is better than continually trying to find new jargon with each edition.
As for going back to ref/fort/will, I tend to welcome any move that makes it less tempting to center all of your points on one or two ability scores, and having more possible weak points is one way to do that.