Retiming is better than Scaling

• It moves the items following the retimed items, so your animation stays tight and your markers stay useful.
• You can edit while playing the animation, as it's independent of playhead position.
  
• It's defined in frames, rather than scale percentage, so you work how you think.
• It has options for customizing behavior just how you'd like, such as automatically adjusting total animation length.

If you have a bug or suggestion, hit me up.