What they need to do, to get their message across, is to parse “Darwinism”, for the average person. Break it down to say 10 major ideas, identify the reasonable ones, and spotlight the bad assumptions built on top of reasonable ideas.
The tower of Babel undoubtedly had a very good foundation, but even a good foundation can only support so much tower before it all collapses.
Well, there are 2 major contentions of Darwinism that I think most of the critics (both creationists and ID proponents) would agree are the weak points:
1) That random mutations (or other random mechanics) can lead to the creation of new and useful genetic information, rather than simply jumbling around or destroying existing information.
2) That there is no limit to the malleability of an organism’s genome, in the sense that, you could change a single-celled organism into a human being, if you simply have enough mutations and enough time.
Creationist generally have more objections than ID proponents, and they aren’t limited to just Darwinism and biology, but those two points are the basic ones objected to by both camps.