Loopable gestures and additional animations for moving when using gestures. -

This would be a great addition especially if you can make it so that a looped animation plays and you can move for example we could take a tf2 bumper cart as an idea for an animation so you can have it looped when standing but as soon as you move it jerks or like starts up forward and than it moves shakily like in tf2.

Loop keyframes. -

This would be great if you could hold on specific keyframes when pressing a key like for example you make a hand wave animation and in it you would have your hand go up and down but than you have a loop in the middle where the hand goes back and forward.

Custom sound input for gestures and animations. -

It would be nice if you could do a gesture and than have a sound play along with it for example let's take the tf2 bumper cart again it has that weird electronic sound when it moves and stays in place so it would be nice if it would also be included with the animation to make it a bit more alive like it's there.

Customizable textures for armor only for the model. -

This would be a useful especially when playing multiplayers where everybody has the same armor texture like diamond iron gold lather. But what if you could just include ruby armor texture or emerald.

Ability to hide cubes for specific animations -also ability to hide cubes in specific keyframes. -

A nice addition so you wouldn't have to hide parts of the animation like the bumper cart example again !! you know considering it's pretty huge now how would you hide it ? I guess you could just stuff it in the player somehow but that takes a bit of time and now if you have a bunch of other animations it now takes even more time to do so. And also you can't always hide a thing like that because sometimes the part is way too big.

Ability to animate parts of the same animation only once when the animation is played. -
I don't really have any specific examples but what if you had a gesture where you wanted looped but only one specific part of the animation is supposed to move once and the others are meant to loop.

Ability to edit all other animations when a change is present like when wearing armor.

Just something cool I thought would be a nice inclusion.

RNG animations./continuation animations -

This would be really sick you could make random sword animations or like throwing animations. or for like continuing an animation if you press the same button in like a specified amount of time.

Switching specific items animation and item specific animations-

This would be also pretty coool.

Potion Effect animations -

Basically whenever you drink a specific potion like for example swiftness you could do like a little speed up animation. or for invisibility you could make a cloud of smoke.

Export and import of animations
Pretty straight forward.

Sorry if my grammar was bad here I kind of wrote this down quickly. But I hope I got the point across. also I don't know if loopable gestures were already included but I kinda thought of it at the time so it's already included.

EDIT: There was one thing that I totally forgot feature that I totally forgot it is like a slider or a transition animation for the head (Basic idea is that when you look up down left or right you have different animations that get transitioned into so if I look left I would have eyes as an example move to the left as well.)