Back in December, Megan Ellison, the producer who paid over $20 million for the rights to the 'Terminator' franchise, hired her brother David to be her financial and creative partner in an effort to get things rolling on the planned new films. David Ellison comes from Skydance, where he worked on projects like 'M:I-Ghost Protocol,' 'Jack Reacher,'  and 'Star Trek Into Darkness.' Their first tasks…