I dunno. Crusher wasn't the most well developed character on the show, either before or after. Pulaski was starting to come around to being an interesting character towards the end of the season, but got cut off.
She has annoying levels of Mary Sue. "Oh, I just happen to be the Federation's foremost heart surgeon."
Virus that ages people? "Oh, I happen to be the Federation's top expert in viruses."
"Oh I just happen to have been involved with Riker's dad"
"Oh and I also performed 2 successful ocular implants so you don't need the visor, Geordi."
You can get away with giving a character one expertise better than everyone else in the universe, not 3.
It would be like if Geordi just happened the Federation's foremost expert on warp engines instead of having to learn from Lea Brahms. And happened to be the Federation's foremost expert on Cybernetics. And knew Riker's sister.
Why did they cut her anyway? Dr. Pulaski really gave an air of "I've studied medicine, I know my shit", while Crusher always felt like "cheerleader that bought her way to a diploma"