Thing is, there's a downside really. It'd be great to see the Time Lords ticked off with the Doc for blowing them up 'supposedly', but the disappearance of Gallifrey and the events surrounding it has done wonders to the Doc's mysteriousness in new-Who. To bring them back
for good would be like tying a string around the Doc's collar and tying it to the post outside the shop which is Time Lord society.
I hope they are brought back in some bizarre fashion but they should soon disappear again. Perhaps they do come back, but instead of the Doc sacrificing them again for the greater good and having to put up with survivor's guilt, the Time Lords do it themselves, forgive the Doctor for his actions and accept his lifestyle.