User blog comment:Njalm2/The Beauty of Kidō/@comment-30807545-20141202175704/@comment-3403804-20141202191612

It probably wouldn't be considered useful enough to be included among the Bakudo or Hado spell lists. The Kido Corps are basically in charge of deciding what sort of spells are fit for Gotei 13 use, and it's extremely likely such spells are decided upon based upon their usability.