Like you, I'm in favor of it too. But I think that it fails to address a lot of issues that could make it a force that is exponentially larger than it is at the moment. Of course, as you mentioned, a lot of these things are out of its scope and must originate from places like Congress.
It would be awesome for Obama to create a panel with proven Serial Investors and Serial Entrepreneurs and have them create a national federally funded YC like organization. Match all the investments with government grants up to a certain amount and watch startups revitalize America.
I'd like to see more support for things like the startup visa and DREAM act too, which would enhance opportunities, but for legal reasons those changes have to come from Congress and can't be implemented by the executive.