What do tu think the ending should have been?

How I think yj should've ended:
I think the ending should have instead impulse getting hit (don't get the wrong idea) instead of Wally, por sacrificing his life before Wally gets hit por the rayo, ray  or something because like in justice league superman gets hit with some rayo, ray that caused him to go in the future, but during that time the whole league thought he was killed. Although this rayo, ray wasn't necessarily the same. They should've brought impulse back in the future where he belongs with his family, friends, ect. Instead of letting a league member to die. Then Wally would be alive. Robin wouldn't have to be taking a break. And impulse would've found away to get back to the future. Happy ending.