I always did find her overscored as a junior--frankly, her jumps were never fast, high, quick, or flow-y enough to consistently net +1 or +2 GOE. If that were the case, then Gracie and Yuna should be scoring straight +3's for their jumps. And the only truly impressive aspect of Julia's spins was the flexibility in the Biellmann and I-spin which, as you say, will be a challenge to maintain through puberty. Does her combination spin at 2012 Junior Worlds really deserve higher GOE than Yuna's at 2013 Worlds?
Also, it is the case that senior international judges are far more tenacious than junior judges in handing out positive GOE like candy. Julia didn't have a single competition this season that even came close in score to the TES she netted last season. She definitely shouldn't be scoring close to or higher than Ashley Wagner, who, for all her lack of a 3-3, has the PCS to bridge the gap. Unfortunately, we didn't see much of Lipnitskaia this last season due to her injury, and she wasn't at top form at either Russian Junior Nationals or Junior Worlds.
To me, both Tukt's and Lipnitskaia's tendency to falter on one of their two programs (for Tukt, it's the SP; for Lipnitskaia, it's the FS) makes their contention for the Olympic spot risky. Lipnitskaia is the far more consistent of the two--she's even more consistent than Sotnikova, but nowhere as mature in terms of quality of skating--but if she can't keep up the momentum and peak at the right time like Radionova, then the federation might have to reconsider if they should send her. It's assumed that she'll go to Sochi if she skates well (places top two) at RN, but we can never be sure.
I think I mentioned this earlier, but Lipnitskaia qualified for the GPF with a pretty watered-down field (no Yuna, no Carolina, Gold was a wreck at SC, Osmond only had one GP, Sotnikova was falling left and right). The fight to be in the top six on the GP circuit will be much more representative of each girl's place in the pecking order this season. We can discount Julia coming close to/beating Yuna, Carolina, and Mao. Julia's best probably won't be enough to beat Gold or Wagner with solid TES and rising PCS, Osmond with two strong skates, or Tukt/Sotnikova's Euro skates.