Thanks for the response Patrick. Seems odd that something like this isn't part of the software? One of the most often requests in a Motion project is to change the timing of elements. Make them shorter, make them longer. When multiple effects are attached to the beginning and end of an element, it can be a lot unnecessary time spent selecting, moving, retiming, moving back to the end.
Or Am I missing something? Maybe the answer is to have the text extremely long, and just move the effects to bring it in and out to affect the time? However, then the timeline doesn't visually show what elements are visible.