If you wanted to remake Treasury, here's what i'd do:
Treasury, $4, Treasure - Duration
Worth 1$ each turn this is in play.
(Only discard this from play at the end of your turn if you bought a Victory card).
I don't know Donald's opinion on this, but given the name and how similarly it behaves, i am pretty sure this is the basic concept of Treasury anyhow (at least i was sure enough to state it whenever the topic of Duration-Treasures appeared). But hey, i was also sure Altar was a pun on alter, and i've been dead wrong with that one.
This seems quite overpowered. I mean, it's better than Treasury in almost every way, plus it costs $4 instead of $5. The only way in which Treasury is strong is that the turn you play this, you get 1 less card.
Also, the wording is very awkward. First off, saying that it is "worth $1 each turn", while not too hard to figure out what the intent is, doesn't really work in Dominion rules. It doesn't matter what a Treasure is worth unless you play that Treasure. It needs to give you $1 to spend each turn. And then it needs to specify when you get that (at the start of your turn, at the start of your buy phase, etc). Because of Black Market and Storyteller. And then the discard condition is wonky. A parenthetical phrase is usually a reminder or an additional piece of information about something you need to do; not the main instruction of how the card should be discarded. There's no reason for it to be a Duration at all if it's just going to state on it that it doesn't get discarded as normal.
