If ASICMINER makes a really good exchange that can also allow for multiple securities then I suggest that Ken considers this exchange to move to. Especially if it solves the US taking over the world problem.
Why? Having multiple exchanges is a good thing for the marketplace. Ken said the ActM Exchange is almost finished to be able to store shares without a colored coins implementation for the time being. ASICMINER is still nowhere near having colored coins done -- they moved out of PRE-ALPHA stage. That likely means there are several months of development until a full release.