
Drawing Thin is a type of card I often dislike and worry about. I can see the designers really tried to balance the cards as much as possible and on the face of it spending a card and an action for cards in the future seems somewhat balanced. They certainly got the balance better than other games in the past!
However, the problem cards like this have is they only get included in decks where the effect is going to be abused, otherwise you won't bother with the card. If you make the card weak enough to not be abused it is far too weak to be considered in another deck so either you see the card in a deck where it is a major engine for limitless resources, or you don't see it at all.