Timeline: Task Interaction

Would be great to be able to interact with tasks more in Timeline.  So, currently, I can only mark a task as completed.  Would be great for that section to expand and show the current fields on the task so that more info could be included without having to leave Timeline.

Example: We have an activity type for Training.  One of my follow up tasks for for a completed training is to check on usage a week after the training.  I would like to be able to add a description of what that usage looked like as well as marking the follow up as completed.