Her punch is only powerful because she puts chakra into it(imagine the if Tsunade did that),though I would agree with that she's skilled as a Med-Nin and that she definitely needs a powerup.
Too late bro. Any power up she get at this point would be pretty useless. Why would she get power up? To defeat juubi? Madara? Obito? Edo kages? Oro? Sasuke? It ain't happening but you can dream.