Pressuring the UK to stay in the EU so it will suffer from a new free exploitation treaty.

The treaty is likely to include a nastier version of ACTA, as if the Digital Economy Act were not unjust enough.

Escaping from this will require every country to leave the EU.

The rest of the treaty will be harmful as well. In general, "free trade treaties" give business increased power over the government. What does business do with this power? It imposes austerity, evades taxation, trashes the environment, and hurts workers. The exact opposite of what the UK and all countries need.