What is this even supposed to mean? What "subtle changes"? What "key players"? What impact on the rest of the lineup?
Because whatever you intended to say with this vague statement, and whatever you think is happening, the fact remains that objectively, we have not been better.
Point percentage is what determines the standings, but it is not the only thing that matters to look at.
And even by that one specific metric, being slightly worse in it doesn't equate to being "unquestionably improved over last season".