just based on the one game I saw Nedeljkovic play in person in the Calder Cup playoffs, he still has significant wrinkles in his game to iron out before he can be a shoe-in for longterm games in Raleigh.
the tools are there: super agile as a goalie, very engaged, honestly a pleasure to watch him play the puck. but that might be both a blessing and a curse throughout his career, just like it was in the game I saw. he had a huge error in the pivotal playoff game I saw (road game 4 of a 7-game series) that honestly should have directly led to a goal, which involved him leaving the crease when he almost certainly shouldn't have. this led to him getting washed out by his own defenseman and if any Toronto Marlie had been in the neighborhood, they could have just tapped the puck into the empty net. in that same game, he let in a very very soft goal from just over the blue line, and allowed a blind shot from behind the net to ricochet off his own leg into the goal to tie the game in the 3rd period.
he went on to play very well based on the games I watched online for the rest of that series, and in the following two rounds as well (in a reasonably split tandem with Dustin Tokarski, it should be noted).
to me, the error I saw that didn't ultimately lead to a goal is an issue, and definitely not a minor one. I do think it can be significantly improved with experience, and I do think his good will continue to outweigh his bad, especially at the AHL level. and I don't think seeing an error like that, even in a pivotal playoff game, warrants trying to change how he plays, especially since playing the puck can be such a weapon for him.
but imo it's way premature to paint him as having accomplished all he needs to accomplish at the AHL level. I think it's prudent to expect these sorts of hiccups for players of Nedeljkovic's age, but I also think that's precisely why you don't get an itchy trigger finger to promote them before they're fully ready. especially goalies, who are 1) voodoo, and 2) subject to extreme mentality and intensity standards due to their position.