Weather deviation
When I ask for a heading (or miles off track), I usually add my estimate for however many miles I expect to need that clearance. e:g "request heading 090 due weather, we will need that for about 60 miles" etc. The Controller (and other aircraft) then know what we are actually planning on doing for the next 5-10 minutes.
And that indication of the required length of deviation is greatly appreciated by the controller.
Keep it up.