Works for times when it's dark and/or you can't see/look at the pistol.
I remember explaining/showing my wife the loaded chamber indicator on the XDMs. Sometimes a feature is unnoticed/unused - until exactly the right circumstances occur.
I remember thinking, when my M&Ps were having the light strike/no strike problems how nice it would have been to have a cocked striker indicator - like the XDM's have. Would have saved me some time/effort.
As long as the new design doesn't create an issue with either proper extractor operation or early failure I'd not object to it. I sometimes get the urge to buy another 9MM P07 but I don't really need one, not really, really, that's the way I feel, sometimes.
This CZ thing can bite you pretty bad, sometimes.