Your personal assessment of my intent is sorely lacking in accuracy, but I know what you mean as far as how folks have a tendency to use the dictionary as a club. In this case, however, you've asked to use a definition we can all agree upon, and to that end I figured a dictionary would be just the right resource, because it represents common understanding.
If you want to propose your own definition of "intelligence" and "design" that's fine with me. Here are my own elementary definitions. Try not to laugh.
INTELLIGENCE (n.): 1.) the capacity to observe and evaluate sensory data. 2.) a body of data
DESIGN (n.): 1.) the quality of having purposefulness.
If we want to participate in this dialogue in a mutually edifying way I really think it would be in our best interests to decide upon dictionary definitions rather than our own, despite the otherwise rancorous history pointing to dubious motives.
So I am asking you as one who has patiently endured my meanderings on the subject, is it okay if we use dictionary definitions as we proceed from here?
I don't know if I have any problem with definitions of intelligence, but I would like you to explain what you mean by purposefulness. Could you possibly describe a test for purposefulness?