In the original series, regeneration was pretty much just changing from one Doctor to another-yet in the new series in addition to that we've had the Doctor regrow his hand (The Christmas Invasion) heal himself from a Dalek death ray using original hand, which of course eventually led to the whole Doctor Donna thing and the Doctor clone (The Stolen Earth/Journey's End) The Doctor using part of the regeneration energy to remove his cuts and bruises from smashing through the window (End of Time) and in Let's Kill Hitler, Mels/River uses regeneration energy to recover from being shot (and also to stun people) and give her energy to the Doctor.
Does this cheapen the whole regeneration concept? Or make it more interesting? Granted, it 'sort of' explains why Romana (In Destiny of the Daleks) was trying on new bodies, possibly she was still within her regeneration cycle....
Does this cheapen the whole regeneration concept? Or make it more interesting? Granted, it 'sort of' explains why Romana (In Destiny of the Daleks) was trying on new bodies, possibly she was still within her regeneration cycle....