No, they won't be disappointed. They are welcome and encouraged to consider formal methods that might assist in distinguishing those cases where a conscious effort at design is involved, versus a more "hands off" approach. Both are valuable and both serve a purpose. The universe would either be a boring place or an infinitely tiresome place if everything manifested itself as a conscious effort on the part of the Designer.
Neither Behe nor Dembski make any such distinction. How would you distinguish between a lazy, hands-off designer and no designer at all? Or do we simply assume design everywhere and then rationalize our assumption however we see fit?