Honestly, Grant Gustin / Barry Allen is the only actor that should play in the flash, his role was so good. I think every emotion he had in these seasons was good, the only think is that I think yall need to do is make him aggressive on certain scenes to protect those who he loves. The flash is the best show over all. He should stay on the role of the flash, I also felt everything he felt when he lost, or won, or defeated some one, or even when some one turned on him. Over all his character was soo good at talking to his enemies to become better heros. I don't think any one can be better character as Grant Gustin. I hated it when I had to finish the show, please make of the flash.