Having the ability to add estimated time for task completion would be great, and must have tool for planning out the projects (how many man hours they could take, and when they would be completed). Also you can plan out accordingly your month, week, day…and complete your agenda for coming days.
This would be a great tool to get a general prospective on what is your time budget and what is your want/wish/must do time requirements. You could modify or drop some of the less important tasks just because you don’t have the time for them and there are other more important tasks.
Time is like money (perhaps more important) so we know how much we have in our time bank account, but we don’t see the time prices of the tasks we plan to do. So by seeing the time price we would decide better what is more important and desirable, and turn down what is less important. This future will turn ASANA from a collection of infinite tasks listings into a structured project budgeting, planning and realization through seeing the availability and desirability clearly. Its like Balance sheet and Profit and Loss statement for our tasks.
I got inspired by this TED talk on people overwhelmed by infinite tasks that may be not so important: The Art of Stress-Free Productivity: David Allen at TEDxClaremontColleges
On the other hand another user requested timer on tasks, by having this future also we would be able to see how accurate the estimations where and make adjustments for the future estimations.