I'm just going to come out and say it: I like Scout. It combos with a lot of things, and I personally do not think it's horrible.
1. It combos with Crossroads for a deck that can use Victory cards as draw.
2. It has a weak combo with Wishing Well.
3. Can defend against deck inspector attacks if they leave Victory Cards on top of your deck.
4. Can let you draw more cards with draw-to-x, and can control what those cards are.
5. Harem, Nobles, Great Hall, etc.
6. Can combo with discard cards like Oasis and Inn (you draw Victory cards then discard them).
7. Mystic, Mystic, Mystic!
That's my opinion, but I think a lot of these reasons make Scout a card that you could buy every once and a while, and benefit from it!