Interesting discussion and well put. It would be relevant here to mention though that one of the commonest tie ins between impulsivity and procrastination is ADHD. It is something that is well worth considering when anyone is faced with industrial strength procrastination & impulsivity problems - as it is usually missed in Adults. Just as modafinil can be helpful- so can the psychostimulants. They are also much older, better understood drugs with a very clearly understood safety profile.
Equally it is worth noticing on the "value " end of the equation- that sometimes we procrastinate because we are subconsciously aware that what we are proposing to do is not the most important thing we could/should be doing.
Interesting that you chose the "burning building" analogy. In the fire sermon the Buddha argued that being incarnated in samsara was like being in a burning building and that the only sensible thing to do was to take steps to ensure the complete ending of the process of reincarnation in samsara ( and dying just doesn't cut it in this regard). The burning building analogy in this case is a terrible one- as we are talking about the difference between a healthy person seeking to avoid pain and disability versus the cryonics argument- which is all about preserving a past its use by date body- at considerable expense and loss of enjoyment of this existence- with no guarantee at all the there will ever be a payoff for the expenditure.