Compensation can never truly compensate somebody for lost time though. No billions of dollars could give you back your 20s, or whatever decade you lost due to wrongful imprisonment.
I fear that if executions were abolished in America, too many people would brush off their hands, declare the system well reformed, and not give further reform more thought. Execution is problematic because of wrongful convictions, not the other way around. I think too many people frame it as "wrongful conviction is problematic because of execution". Abolishing execution does not solve the problem, it merely marginally lessens the impact of the problem.