Yes, but each time diluting the power of the justices individually. Right now if you have one wacko justice who decides on the basis of political ideology instead of some of the established legal theories they have 11% of a say in things. Add another few justices who are relatively normal and the ability of the wacko to swing things into dangerous territory goes down. Even if the tit-for-tat tries to cram more wackos in you have to try to convince the Senate to let more and more obviously terribly choices through.