There is a pretty strong correlation between high danger chances and shooting percentage... for obvious reasons. Avs are producing in the mid 11s 5v5 per game and that actually isn't any different than last year. I would say odds are that shooting percentage will go up. Given the number of shots the Avs typically have, it is probably unlikely to surpass 9... but that is in the realm of possibility. It should be noted that a larger part of the shooting percentage drop is due to depth rather than the top guys. Top guys are down about 1-1.5%, depth guys are down a lot more. Also to that the PP is clipping at a 22-23% rate and last year that rate was ~15%.
The percentage splits of this is the core of the issue, and we've been complaining about this pretty much all year. The coverage... the Avs have typically been in the 9-11 HDCA given up per game over the years (last year was actually worse than previous years). This year they are giving up almost 13 HDCA per game. The heatmaps show the Avs are giving up the middle of the ice a lot more. Puck on stick time is also down dramatically. The Avs are playing much, much worse defense than in years past. You can probably come up with a number of reasons, but one prevalent theory is that the Avs don't have the ice tilting when the top line isn't out causing them to cover more and tiring them out instead of the other team.
On the save percentage part, 5v5 the Avs are over 95%. The high last year was Canucks at 93%. Kuemper played well for the most part and the Avs were at 92.5%. So the regression there is very likely to happen. Outside extremes, PDO isn't the greatest measure in the world, but Avs are 101.8 right now. That is not impossible to sustain, but basically in the realm of being 2nd-4th in the league and I could be wrong, but I don't think 102.5+ has been held more than twice in the past 15 years. Not even the 13-14 Avs were that high. An improvement from the current 5v5 mix is rather unlikely.