I disagree with your assessment that Obama just talked. At least in Israel there are political ramifications, as his speech is seen as a signal of a new approach to USA-Israel relations. The government is already changing their tone about the two state solutions. The settlement movement declared Obama public enemy number one. They relate to him as "nigger" – "Koshon" in Hebrew.
His speech is seen as a marker of a new attitude that will be followed by action, including freezing of the settlements and giving a real chance for the Palestinians to voice their view on the solution. Obama found the soft belly of Bibi Netanyahu’s government. Most Jews in the USA, and the Obama administration, do not have any understanding of the messianic dreams of the settlers.
However, it could be that I am too optimistic, as I believe that you should watch what politicians do and not what they say. Still, I think that your judgment does not give a reasonable time span or perspective for a new policy to happen.
I think that not only are the settlers afraid of him, but so are Al Qaeda. They notice that Obama presents the Muslim world with new options. He ruins the one-dimensional Bush view of the "axis of evil." Bush made Al Qaeda's work very easy as a recruiting tool. Obama challenges all of us, Jews, Muslims and Christians, to listen to the "other" point of view.