Some examples:
What would cause us to kill this project early?
Who is the DRI for this? (“directly responsible individual”)
Is this project the optimal use of the DRI’s time?
Does this project gain anything by being done now?
Who owns this going forward?
Can we do this with less?
Do we have to do this? Really?
Where do we hit diminishing marginal returns?
What’s a version of this we’d be proud of?
How can we get a marketing / recruiting / PR / etc win out of this?
What do we hope to learn here?
Have we considered charging more?