The best part of Kelo was the outcome; after seizing the property the company that wanted it didn’t use it anyway.
What a disgrace; a similar situation happened in NY along the Hudson River in the 1960s. The government forced people out of their homes in a little hamlet called Doodletown, allegedly to build some sort of ski area; the project was abandoned and the properties remain in the hands of Bear Mountain State Park to this day (the homes were all demolished).
And that is the exact danger of allowing "projections" to stand as justification. All the government has to do is say "I think that we might possibly get more money if we take so-and-so's property;" arguably Kelo v. New London was the Suprem Court's repudiation of property-rights in whole.