I like it when one card-shaped thing has effects that resemble those of a different type of card-shaped thing: Inheritance is basically a Project, Obelisk is kind of a Trait, Lost in the Woods is essentially an Artifact, and Plateau Shepherds resembles a Landmark. (Am I missing any?) It's interesting to see similar gameplay concepts get implemented with the tools of whatever a given expansion has as its gimmick.
I would support the changing of all of those, except plateau shepards.
I works just like a project.
O - just like a trait.
LiW — just like an artifact.
However, PS does not follow the 2-non-card limit and requires a kingdom card to summon it.
I’d argue that Seize the day is a project - since it’s once per game.
I see no other.
Both HoP and Scheme missed their chances to be night.