
Originally Posted by
Oz1337
Basically, according to Kanou in an interview Servants get animation upgrades when they agree with TM about it, which is usually when Servants have an important role in an event or main story. The reason some of the Servants in this collab didn't get one despite getting costumes is probably because all of them were side characters, the main characters were Miss Crane, MIXA, and maybe Mashu and MIXA's idol team (and all of them already have AU).
Which means that if you're hoping for Phantom or Erik's AU for example, good luck!