I suspect once Lisbon is ratified, the EU will get up to truly outrageous stuff. It will move quickly to force Britain's hand on areas where our veto is weakened or abolished. So by a May 2010 election there will be a fresh battle to fight and the part will have plenty opportunity to make their Europe approach seem forward-looking.
Brown is trashed by The Sun brilliantly today, and he'll hate it. The only upside is that he may get a Tory split once the ink on the Lisbon Treaty is dry. The Tories would be mad to give him that split.