Sychronized animations and where eventual implementation should be added

Sychronized animations and where eventual implementation should be added

At the moment in jQuery (and UI as well, see explode effect for prime example); there is no possibility to execute multiple animations in parallel and guarantee that they will execute in sync.
At http://dev.jquery.com/ticket/6281 I proposed an implementation to effectively enable synchronization; but question arises if this should be in Core or in UI. Thus I need to ask you what you think, and also if my implementation is the rightâ„¢ way to accomplish this.
An example of this issue can be found at  http://js.azatoth.net/test/slotted2.html