She always *was* actually a character and not *just* a plot point/plot device. The whole point to Rings of Akhaten's prologue and ending, and the telling exchange in Journey to the Center of the TARDIS, the events of Nightmare in Silver, etc. was to make her a character. With a backstory and reasons why she traveled with the Doctor in the first place, her attitude towards children, her bossy nature...I think Jenna could do that. She's played three different Claras (and arguably four, since her season eight character was actually a character instead of a plot point as she was in 7b).
It continues to mystify me how everyone ignores all that and says "Oh she was just a plot point." Yes, she was. But she was a fully-developed unique person, too.
Well, I never thought of her as just a plot device, but Series 7b could have fleshed her out a bit more (although Series 8 did flesh her out and it turns out she's a selfish moron, so
). I will say I don't recall two of those episodes really contributing to her character, mostly because Rings of Akhaten and Nightmare in Silver are two of the worse 11th Doctor episodes and I watched them once and never again (although journey to the Center of the TARDIS is pretty good, and I suppose she did get some character stuff in it, although most of that was reset away until Time of the Doctor).
