Absolute disappointment.

Susan Triad was just a goddamn red herring, why take the effort if it's not going to pay off?

The series long mystery about Ruby's mother has a horrible conclusion.

Sutekh just really came back for no reason, gets outmatched so stupidly, taking a dog for a walk all over the Time Vortex like dragging a body through a hot dry road attached to the back of a car

Definitely the worst finale RTD has written