As for ID when it comes to filling in gaps, no one uses God as a filler, unless it used generically.
But then does 'a designer did it' add anything that is scientifically constructive? For example look at the bacterial flagellum as an often cited example of an IC system. Could you give IDs scientific explanation of the origins of this structure?
In a quick general question, when do you think a designer stopped designing, allowing evolutionary processes to take over, and how did you conclude this?