Funny how Eccleston's regeneration is still the best of new who. Guess it is the simplicity of it that makes it great.
Although I think End of Time is slightly better, I agree with you when you talk about simplicity. This one was too complicated yet too short. Lets hope Capaldi's regeneration takes inspiration from the better regenerations.
BTW, do you think it's funny that in 2013, we've had two doctors die of old age (Hurt and Smith)?