BUR #28424 has been rejected.
deprecate sentai
A while ago, I had gardened this tag since, despite its wiki, it didn't seem to have a proper use case. Gardening it, I found that it had three valid use cases, which weren't exactly unique to it. The first was tagging Super Sentai/Power Rangers-style costumes, which was something that was already covered by tokusatsu (and if that was ambiguous, then a tag for superhero tokusatsu costumes should be made instead, because this use extended bizarrely to Kamen Rider-style costumes too). The second was tagging Super Sentai/Power Rangers-style (or tokusatsu-style generally, Kamen Rider poses got slapped with this tag) solo poses, something which is also ostensibly covered by tokusatsu, but should probably receive a unique tag, ala tokusatsu_pose. And the third was tagging Super Sentai/Power Rangers-style group poses, which we already have covered with group pose.
There doesn't seem to be a real reason why all of these things should be lumped together under this tag instead of tokusatsu, or given more specific tags, so I think it would be best to just deprecate it.