"Is that ID's main appeal? Simplicity?"
Perhaps you will object if I refer you to Occam's Razor?
Not at all.
(Hint: the addition of the 'mystery designer' runs contrary to Occam's razor)
"Perhaps you will object if I refer you to Occam's Razor?"
Simplicity is not the same as simple-minded.
So, in conclusion, be careful what you wish for. You think you are wishing for acceptence and acknowledgement of God - a creator. But, what you are really asking everyone to do is to twist words, definitions, and reality in order to get your way - same as the liberals and commies.
But, it's ok that you want to twist science, the world and reality for your own personal (whether noble or not) belief system. After all, it's only "for the children" - or for "everybody's own good".
Sound familiar?
I don't think you understand Occam's Razor.
Occam's Razor applies to problems of logic, not science.