Which means, I assume, that no evidence supporting it is needed? How convenient.
It is "self-evident" in that animals are known to choose their mates and thus affect "certain features" in their offspring.
Also "certain features" is a subset of "all features" and thus the hypothesis does not replace evolution theory.
In my view, the intelligent design hypothesis is so non specific it could have been called a "conjecture" and so self-evident, it could even have been called an "observation."
Bad assumption. Self-evident means that the evidence is so overwhelming that it hardly needs explanation. Evidence of intelligent design is in you and around you. Everywhere.