Don't need to read the links. I work in downtown Manhattan and read about this often.
I am aware that the Drawing Center doesn't want any restrictions and is seeking to move to a nearby location. I'm not as certain as you that the IFC is "next". I think Pataki may be trying to garner some acceptance for a "watered-down" IFC here...but I'll wait to see the comments in context.
It is time for the federal government to step in and declare the WTC land a federal landmark and let the Interior Department develop the monument. I do not trust the NYC trusts and public organizations to do it properly and represent the country justly.