It strikes me as curious that;
While the new S&W revolvers have this hideous hole in the side, their competitors like Ruger, Rossi and Taurus put a similar functioning device into all of their new revolvers without making them wider or affecting the asthetics (they've also, apparently, made their ILSs more reliable).
Companies make good and bad decisions all the time. Companies respond to social pressure all the time. They also respond to customer desires for product features - or the lack thereof - if they want to stay in business. It would appear that S&W responded to social pressure, with a substandard design choice to the detriment of their customers' wishes and has chosen to stick with their choice.
That's fine by me. I've bought a handful of S&W's older, used, pre-lock products along with some number of brand new Rossi, Taurus, NAA and other revolver products. Truth be told; overall, I'm happy with the other manufacturers offerings of new revolver products. S&W gave me the opportunity to explore the offerings of other companies which I would not have otherwise done.
For safety purposes, I lock my guns in a safe. When I need to keep them locked outside of the safe - I put trigger locks (no matter the brand - both pistol and rifle) on them because I can't tell if the ILS is "on" without pulling back on the hammer. So the ILS on any gun is of ZERO use to me - I don't ever use them. In fact, it's kind of a pain to keep the "keys" around so that I can "unlock" them if/when the ILS system fails.
But really, what the heck does S&W care? I'm sure they don't give a rat's behind what we think about their ILS because, if you could see their income statement by product line, you would realize that they make all their profit from their 'plastic brass-shucking space pistols' like everybody else. Injection molding costs only a small fraction of what it costs to makes stuff out of quality metal. Ruger probably makes more profit off an LCP than S&W makes on a brand new top-of-the-line Comp or Pro Series revolver.
All of this is, of course, IMHO and FWIW...