Collection events (which is what star/collection revivals are now) are traditionally grindy as fuck to begin with. I only included Claudia mostly because of her G map. Imelia had some crazy G maps too, but having to contend with the new map layouts was one issue that made it harder to adapt.
"Odette revival" is a meme.
The first time Odette showed up on Nutaku, she was preceded by a month-long break. The second time we got a month-long break, it was called Odette revival or Odette 2.0. So basically, Odette is a curse on Nutaku Aigis.