This would be incredibly helpful. My company's timelines often go out of whack as we wait for client approvals or submissions from our partners, being able to filter down to only see what's ready to go would go a long way to making things more manageable from moment to moment.
This would be super helpful. I would prefer to see all tasks (ready to start and placeholder tasks) on the scheduling tool, but to have the ability to know which ones are ready to start on would give us the ability to move these up sooner if resources become available. It would also give the resource a view that is very much lacking right now.
In fact the entire idea of "ready to start" is weak -- thinking of the terribly confusing and unhelpful (but "by design") notification that goes out to all dependent tasks.