For V2:

Incorporate the shot of Luke’s saber into Rey’s vision to explain where it came from
New dialogue for TR-8R in his fight with Finn
Revert the reveal of R2 to the original version except that R2 is more dilapidated
A scene where Leia is informed that the Senate is mobilizing the fleet
Reincorporated scenes of Kylo searching for Rey on Starkiller Base
An extended series of scenes where Rey repairs R2 at the Resistance Base
Hopefully craft a new scene of the Falcon traveling across the galaxy in the journey to Luke

…and more.

A lot of the work on these scenes is already done, but there remains quite a bit to do.