a swiss knife tool includes several functionalities for MaYa animators.
AutoSnappableTimeLineSlider: Mimics smooth step navigation for Timeslider on snap mode. thus allows smooth navigation +allows keying integer times.
Autostep Selected Keyframe : TimeSlider automatically steps to time as you select a keyframe in graph editor.
Define and Snap to Extreme Keys: allows an animation curve keys as Extreme keys and allows only snap to nearest TimeSteps. This allows to keyframe on other animating objects for only defined extreme key times.
INSTALLATION setup is one step: put the following line in userSetup.mel source ktAnimWorx;