I don't see how McNair is going to catch up to teams like NO, OKC, Houston and others who have much more trade/draft capital than the Kings and are improving at a faster pace than the Kings. Essentially, it seems he's left to do more with less (than other teams), which is a daunting and risky proposition. How many times has a GM been able to parley low 1st round picks and 2nd rounders into a powerhouse? Denver pulled the Joker out of their hat, but wow, that's a very low probability event. So, yes I'm confident the Kings will improve, but no, I'm not confident they will improve at a faster rate than the competition. Monte may have to go in a radical direction. Otherwise the Kings could be like a Portland who had a great player in Lillard (and also CJ), but accomplished nothing over many, many years.
Do you think that would get you past OKC, Houston and NO next year? Retaining Monk is status quo. So the only variable is "turning Heurter and Barnes into something else." Do you think the "something else" can be major enough to beat OKC, Houston and NO next year? Keep in mind that those aforementioned teams are also looking to get better next year. They won't be this year's teams. They will most likely be improved versions of this year's teams, and with trade/draft capital exceeding the Kings, they could be much better.