Just as I requested for the DIR-330, I think that the DPR-1260 similarly has the right type of target audience for a SharePort feature. It is already meant to handle printer/scanners, so why not storage as well. Of course I know nothing of the underlying processing power of the chipset and what not, but I own one of these as well and thought it would be a nifty addition.
Just to be clear, by the time any of this would get implemented, I wouldn't have a need for it anymore.
Thanks for listening,
Josh