In the first place, ID is not the same thing as Creationism. Secondly, Evolution theory is just as faith-based as any other theory concerning the origin of life.
ID is indeed creationism, just a little beyond it. Both require the existence of a supreme creator or guiding force. That is understood to be God no matter what. God is the premise behind creation and also is the premise behind ID. I agree with your last statement too. Evolution requires "faith" as well. There are some merits--things to change and adapt to different conditions, but it does require some stretching.
God is not religion. A religion is a belief system requiring a certain amount of blind faith, and while most are based upon a belief in a supreme being, some are not. It takes just as much faith to believe in one unproved theory as it does to believe in another, regardless of whether or not God is included in the equation.
ID is the same as creationism. Ever hear of the Wedge document? ID is a back door attempt to introduce creationism in schools. A lot of creationist organizations, like the Discovery Institute, have people saying that the designer in ID is the God of the Bible. You can't get more religious than that and it shows that ID is the code term for creationism.