No, there is no value. It is a reflection of goaltender performance, in front of them and behind them.
That is blatantly false. I don't know where you invented that idea but it's been pretty well documented for years that it's untrue.
Defensemen still have no control over save percentage
The uncontrollability of on-ice save percentage
Save percentage variability regression
It doesn't even pass the "common sense" test - the
worst on-ice save percentage of the Boston Bruins is Patrice Bergeron (0.890) and the best is David Pastrnak (0.982). If you think that Patrice Bergeron is somehow causing Rask to play worse than an AHL backup, while the rookie Pastrnak is assisting Boston goalies in playing an order of magnitude better than any Vezina winner ever, then sure, maybe players can affect save percentage in that world.
Price's sv% with Markov on the ice over the past 3 years (2012-2015):
0.936 (elite)
0.912 (well below league avg)
0.940 (elite)
Price's sv% with Emelin over the past 3 years:
0.934 (elite)
0.911 (well below league avg)
0.936 (elite)
Price's sv% with Gilbert on the ice this year: 0.942 (elite)
random. not something players can affect.