That's precisely what Bush and the writers were asked to do and they've done it brilliantly.Wow, that comparison is stretching a penny into copper wire, right there.![]()
Yes, I would have done things differently. I would have stuck with her being a researcher with a background in paleobiology/ancient DNA, xenobiology, cybernetics, and exo-archeology (any one of which has story potential alongside M'Benga in Sickbay, including adjusting equipment and researching novel solutions) and I would not have thought to make her a nurse straight away (which I did not like) or a nursing veteran of the Klingon War (which I did like). I am certainly uneasy about drug-induced combat prowess (which I do not like). I think drafting her in to help in an emergency would have been a better way to introduce her to nursing and for her to acquire the taste for using her qualifications to help others outside her research lab that lead eventually to her being an MD.
As far as her personality and romantic trials go, I absolutely love the way they have fleshed her out, turned her dynamic with Spock on its head, and recast some of scenes in TOS in a fascinating new light.
Chapel appeared in all 3 TOS seasons in about as many episodes as Chekov, and yet she is forgettable, often not counted among the main characters when people talk only about the Big 7. Nobody is going to forget Jess Bush's Chapel.