I think the most general-case way to think of this is a kingdom like Village, Smithy, Goons, Lost Arts. For simplicity's sake, say all the piles split 5-5 (and we ignore the end-game condition). Where do you want your Lost Arts?
Option 1: Village
No. Feast or famine. Super villages are just worse than the alternatives.
Option 2: Smithy
This allows you to draw your whole deck easily. Then you play 5 Villages and 5 Goons.
Option 3: Goons
This allows you to freely play your Goons as long as they weren't drawn dead.
Ignoring option 1, both other choices have a best-case scenario of drawing their whole deck and playing 5 goons. The difference really lies in the average-case scenario. The Smithy option relies on having a Smithy in your starting hand. The Goons option relies on having a Village PLUS a Smithy in your starting hand.
This is the point that "Chris is me" keeps making. Putting the +Action on your terminal draw allows you to draw your whole deck, THEN line up your village and payload. Putting the +Action on your payload means you have to line up your village + draw in your initial hand of 5 cards (or 3 in the case of Goons).
Edge case: sure if you win the Goons split 8-2, put the +Action there. But that's an edge case. In the general case of two fairly balanced decks, the terminal draw is the best place to put the token.