(a) Our best guide to what intelligent design would produce, comes from looking at what intelligent designers actually produce. Artificial Intelligence and Robotics are the fields involved with designing artificial persons. I predict that an intelligently designed "person" would be more like an AI product than like a person.
(b) If there were an intelligent design for humans, we would expect very few spontaneous abortions. A spontaneous abortion is a failure, and no intelligent designer would tolerate such a high failure rate.
(c) If there were an intelligent design for humans, there would be no sin. A morally responsible intelligent designer would take responsibility for failures of the design, and not attempt to pass the blame onto the victims of the design failure.
I'll note that these predictions are on the assumption that humans were intelligently designed. They do not apply in the case of a grand designer who created the cosmos as a whole and then allowed it to develop naturally. They do not even apply in the case where the designer created the first primitive biological organism, and allowed biological live to evolve from there.
Compassionate conservatism - bringing you a kinder, gentler torture chamber