Recess appointments are only useful for administration positions where the office holder servers at the pleasure of the President. Such people are routinely replaced at the beginning of new Presidential administrations.
Recess appointments are counter-productive for lifetime federal judgeships and appointments to the Supreme Court. A recess appointment would expire just as a new administration comes into office. The new President would then get to appoint a Supreme Court Justice for life. That is why there is no benefit worth having in using recess appointments for judges.