Referencing the Arcanist class in the 1st Edition Pathfinder Advanced Class Guide, the "Bloodline Development" exploit specifically states that "the arcanist must select an ordinary bloodline, not one altered by an archetype" (pg 10).
However, that restriction to bloodline choice is NOT included in the description for the "Blood Arcanist" archetype (pg 77). It states "a Blood Arcanist selects one bloodline from those available through the sorcerer bloodline class feature."
Is the exclusion of that restriction an oversight or intentional? Can a Blood Arcanist choose a Crossblood or Wildblood bloodline?"