I would love to be able to customize the easing function - similar to how you can edit easing graphs in after effects - or the simplicity of how you can edit the easing curves in InVision Studio. This really gives a us the ability to make a product feel more custom.
Importing easing curves (maybe via plugin panel?) and exporting them for developers would be nice to have. Would like to have a way to set delays too.
This would take my animated prototypes to the next level. Principle allows for custom curves to be implemented and saved for later.
As option to specify bezier curve in easing options.. that would be great.