People who haven't followed the Ws that closely seem amazed, but JaVale was one of the best centers in the NBA this season on a per minute basis.
Per 36 minutes (in 739 total minutes):
23.0 pts on .642 true shooting, 11.9 rebounds, 3.3 blocks
+10.1 net points per 100 possessions on the best team in the NBA.
Emphasis on "per minute basis," of course: the Millsap Doctrine probably doesn't apply that well to him, since he has issues with asthma/conditioning and foul trouble, and his shock-and-awe style seems to work best in 6-7 minute bursts once or twice a game, as a change of pace. Early in the season he also had his longstanding issues with leaving his feet way too much on D, which is likely why throughout his career his poor-ish defensive plus-minus results have always belied his insane length and athleticism and high block totals. But working with the great Ron Adams and staff over the course of the season, he seems to have curtailed that significantly. In last night's game his mere presence around the paint deterred a few rim attempts, without him having to leave the ground.
Meanwhile, on the offensive end, Kerr, Adams and co. have basically cut out all the post touches and decision-making opportunities that used to get him into trouble (and on Shaqtin' a Fool) and turned him into a 24-7 dunker / rim attacker — basically a longer, more offensively gifted version of DeAndre Jordan (DJ does not have that smooth drop-step layup move he executed last night, for example).
Through his first two playoff games: 23 minutes, 21 points on 10-11 shooting, 10 rebounds, 6 blocks, 2 fouls.
As far as his free agent prospects: I suspect it's gonna be a tough decision for him, the Warriors, and other potential suitors. The Ws can only pay him the vet min (or part of the MLE, depending on what they do with Ian Clark and Zaza). Other teams will be able to offer more, but can he remain this productive outside of the warm, supportive embrace of Kerr and Adams, the laid-back Bay Area vibe, and hoops-savant teammates like his old friend Andre, Draymond, Steph and KD (who went above and beyond to attack Shaq after Shaq's latest stupid "JaVale / Dr. Strange" featurette) etc.? And after wandering the cruel, miserable NBA wilderness for the first 8-9 years of his career, how much will he want to leave the hoops nirvana he's found by the Bay? Stay tuned...