As an evolutionary theory, Intelligent Design Theory accepts that evolution does in fact occur, and is therefore fundamentally opposed to biblically literalist "creationism."
I believe in intelligent design but the way we decide if something is scientific is by consensus in the scientific community and, except for a very small percent of fringe scientists, the scientific community of every major country have concluded that at this point there is not sufficient eveidence to consider intelligent design as a scientific theory.
As a Christian and a person with a strong interest in science (and a physics degree) I know that intelligent design is far preferable to claiming that the creation story is word for word literal. But Christians need to take that next step and acknowledge that if God has left scientific evidence of ID then we have not found it yet.
Belief in God requires faith and that is not a problem because that is how God wants it. He could remove all doubt if wanted to. He wants us to have faith.
Sorry, but that's not so. Every major scientific theory we accept today was originally ridiculed by the "scientific" majority. If it is real science, then it will speak for itself. A scientific theory is either convincing, or it isn't. One who simply trusts that most scientists are right likely does not understand science themself and makes the logical fallacy of appeal to authority.