Self explanatory, but the other discussions made me ponder this. I would never expect errata in this regard, but Plots, more so then costing on other cards seems like something easy to balance. You've got 3 variables on top of the plots ability (and that concept is too multifarious for me to try to calculate).
I'm curious what plots do people never see get played, and what alternative stats it might take to make their text playable. As I asked in another thread, Valar is "the bomb," and it would still be playable at 0/0/0... And then I considered the notion of a Negative Gold plot... where you're starting in the hole when counting, but you could build around it by using only reducers.
I don't think I've seen Snowed Under, The Raven's Song (I've never wanted this ability bad enough... what's the graph of the three values that you'd play if the plot had no text), Unconventional Warfare, and At the Wall. It's interesting that the last 3 are all trait-based (and I'm sure UW would be playable in a deck if we there were more effects like Dacey Mormont.
Frankly I think Snowed Under is playable, though perhaps 4/1/1 it might be seen more frequently. It's great to deal with an Out-of-House Seastone Chair in Bara, or a Red Viper if you don't give him the opportunity to defend, or anyone with the Black Cells.