User blog comment:Matheus1234zx/Grant, Candice, Carlos, Jesse and Violett leaving after season 3/@comment-27104941-20170315181539

The only mains I could see the show losing is Jay (if he stays in the Speed Force), Jesse (if she doesn't come back to Earth-1), and maybe Barry, as the show seems (at least to me) to be setting up Barry sacrificing himself to beat Savitar.