What concerns me is that he has stood out as looking fantastic, noticeably better...And yet this vastly improved looking Davis is still, through two games, averaging 13.5 points, .5 assists, 5 rebounds, .5 steals, and .5 blocks and it's taking him 31 minutes to do so. As a point of reference, a stand out bench player gives you that in maybe 24 minutes. So it's worrisome to me that even looking great while watching, he's still just providing "good" bench production expanded into borderline starter minutes.
A nice quick estimation that works surprisingly well is to add up all the "good" stuff from a boxscore (pts, rbs, assts, blks, stls) and subtract turnovers, and divide that number by minutes played. It's not perfect, but it's surprisingly consistent that, as long as the player is playing a decent amount of minutes, good players all end up being above .75 or so, with elite players over.85-.90. Rarely to big minute players end up over 1.0, with Dirk, Dwight, Wade, Lebron, and Durant being there frequently. Davis, despite his good play, is around .66. So he's not really contributing enough to label him as essential or irreplaceable yet; he's certainly not ready to depend on as a starter, and part of why he looks better is he's getting huge minutes but really not filling those minutes with enough good stuff.