[Charlotte Corday]

A proper scientific approach would be, if the evidence led to intelligent design, to then try and determine the origins of the designers and methods used in the design process.

"Intelligent design" need only mean that a life form, originating somewhere else in the universe via natural means, had/has the ability to manipulate the development of life here on earth. As the saying goes, "Any sufficiently advanced technology is indistiguishable....."

[Ichneumon]

A proper scientific approach would be, if the evidence led to intelligent design, to then try and determine the origins of the designers and methods used in the design process.

...and if that's what the evidence was indicating, science would be very excited at the prospect of learning about that intelligence and its methods.

The problem for the ID'ers is that so far, the evidence fails to lead to conclusions of intelligent design.

[Non-Sequitur]

A proper scientific approach would be, if the evidence led to intelligent design, to then try and determine the origins of the designers and methods used in the design process.

How would you go about doing that?