I'll grit my teeth and bear it if this feature is added :-) but I think it's a bad idea. The result, for me at least, would be way more actions "due" today than I could do in a week. That means the due dates would be notional, not real, and I'd be tempted to ignore the real ones.
It's tempting to assign due dates that are really just "I want this to be done" dates, but it's counterproductive in the long run. Save due dates for things that are actually due, as in you have an agreement or an obligation to get them done by the due date. If the worst thing that can happen to you when a due date arrives is that you have to move it forward, then it wasn't really a due date to begin with. There are better ways in OmniFocus to note your priorities, such as flags or changing task order in parallel projects and using the Next Action filter.
(And yes, I know it could be made a feature that could be turned off, but every additional feature has an opportunity cost to the developers. I'd rather see the manual sort features improved.)