"Accept changes" is a good disposition, but it strikes me as suboptimal to have the alternative be "reject changes". It seems like that implies that the changes should be rolled back or totally undone. More often, we want to say that "I am done with the review and I think something needs to be changed."

So perhaps there is a better way to word it, but the best I can think of is that the ways to Complete Review should be "Accept changes" and "Recommend rework". Perhaps "Reject changes" could be a third option, but I wouldn't use it very much.