Some last thoughts i had:
Midnight Gathering and Shaman are basically the same idea, but differently balanced. I like Midnight Gathering a bit more, and i also think it's not such a bad idea. Of course it's basically a 5$ that only later decides which of your cards it will be, but it still needs you buying those originals.
Stranger should use the Tribute method to find the cards which should become cheaper. I like the general idea and so i'll vote for it. Same goes for Artefact which probably should just be "+1Card, +1Action, Trash a card from your hand" on play.
Mill and Lucky coin are both no-fun cards that can wreck even your opening buys and leave you with a serious disadvantage early on. Lucky Coin is the worse.
I feel Troglodyte Cave might work better costed at 6$ with a little bonus, so gaining Duchies would be possible.
Ring Leader, if played in an engine, can wreck your next hand, leaving you with only one valuable card. I considered voting for it before, but i guess i won't.
Cards i consider voting for:
Consulate, Artefact, Troglodyte Caves, Sanctuary, Witch Doctor, Midnight Gathering, Stranger
Oh, i just see i don't have much time left
Better decide now...
Edit: Oh yeah, cards should fit Hinterlands... Guess that narrows my choice a bit.