Original sentence: It alters how the European Union (EU) works through a series of amendments to the Treaty on European Union (TEU, Maastricht) and the Treaty establishing the European Community (TEC, Rome), the latter being renamed Treaty on the Functioning of the European Union (TFEU).The most prominent innovations of the Treaty of Lisbon are arguably the scrapping of the pillar system, reduced chances of stalemate in the EU Council through more qualified majority voting, a more powerful European Parliament through extended codecision with the EU Council, as well as new tools for more coherent policies, such as a long-term President of the European Council and a High Representative for Foreign Affairs
Edited sentence: It radically alters how the European Union (EU) works through a series of amendments to the Treaty on European Union (TEU, Maastricht) and the Treaty establishing the European Community (TEC, Rome), the latter being renamed Treaty on the Functioning of the European Union (TFEU).The most prominent provisions of the Treaty of Lisbon are arguably the scrapping of the pillar system, reduced chances of stalemate in the EU Council through qualified majority voting, a more powerful European Parliament through extended codecision with the EU Council, as well as new tools for more coherent policies, such as a long-term President of the European Council and a High Representative for Foreign Affairs