Seems like a great and well-designed plugin! I like how you kept the workflow consistent so the learning curve isn’t too great when switching between the default animator and this one. Although, there’s one aspect of this plugin I’m concerned about: the Id system you make for individual keyframes:

Although it’s 1 in 200 million, this system might pose as a bug to the few people who get the same Id for 2 or more keyframes (maybe even multiples of times).

Having 1 keyframe, there’s a 1 in 200M chance
Having 2 keyframes, there’s a 1 in 100M chance
Having 4 keyframes, there’s a 1 in 50M chance
Having 8 keyframes, there’s a 1 in 25M chance
Having 16 keyframes, there’s a 1 in 12.5M chance
Having 32 keyframes, there’s a 1 in ~6.2M chance
Having 64 keyframes, there’s a 1 in ~3.1M chance
200M / #Keyframes

Assuming each animation has 64 keyframes:

Having 1 person, there’s a 1 in ~3.1M chance
Having 4 people, there’s a 1 in ~781.3K chance
Having 10 people, there’s a 1 in 312.5K chance
3.1M / #People

Assuming each animation for each person has 64 keyframes:

Having 1 animation, there’s a 1 in 312.5K chance
Having 2 animations, there’s a 1 in 156.3K chance
Having 4 animations, there’s a 1 in ~78.1K chance
312.5K / #Animations

Keep in mind, this is only the outcome of 10 people with 4 animations with 64 keyframes in each animation. There will obviously be more people that make more or fewer animations with more or fewer keyframes which will probably decrease the chance.

Anyway, hope you update this plugin with more features!