I have both semi autos and revolvers. As another poster mentioned, each has their place according to what use you want to make of them.
I don't know about people with semi-autos switching "back" to revolvers. Perhaps they never "left" and had/have both. But one thing no one has mentioned is the very important advantages a revolver has over a semi-auto.
Sure the semi has high capacity, but studies show that most domestic gunfights are over with just a few rounds being expended. So in that case you don't really need hi capacity and its heavier weight due to more cartridges.
The number one advantage a double action revolver has over a semi is if your first round is a dud, you don't have to rack the slide to manually eject it and chamber another round before you can fire again. With a double action revolver if you have a dud, you just instantaneously squeeze the trigger again to index to the next round. In my opinion that's the revolver's main advantage over the semi-auto and that alone could be a life saver.
Another advantage of a revolver over a semi-auto, is for ladies and some men, particularly elderly people with limited strength in their hands, that have a hard time retracting the slide of a semi-auto. And for those people who don't really shoot nor train at all, but just bought a revolver for home protection.
For them they are not physically able nor trained to instantaneously rack the slide to clear a jam, and or to remember to thumb off the safety. Imagine an elderly grandmother in her mid seventies with limited and weak hand strength, trying to train to competently handle and operate the hammerless glock in a crisis situation. Ain't gonna happen in most cases. But she can easily learn to load and simply point that snubby .38 revolver at the home intruder and squeeze the trigger without much training at all and without any trouble in most cases.
With a semi-auto you don't want to keep your mags loaded max all the time because of causing mag springs to weaken. No such concerns with keeping a revolver cylinder loaded all the time.
With a double action revolver there is no safety to disengage, and all you have to do is point it and pull the trigger.
Also with a striker fired, hammerless semi-auto, such as the glock, it isn't as readily obvious that it may be chambered and cocked as it is with a double action revolver, where if the hammer ain't back, it ain't cocked. That's a nice measure of safety to consider for someone who isn't trained, not interested in training, may have limited hand strength, but still wants a handgun for protection.
If any semi-auto shooters are "changing back" to revolvers, perhaps it's because they have had a few duds in their semi's and realize the time it takes to rack the slide and clear the jam could get them killed, so they get a double action revolver and eliminate that problem.
The semi-autos have their place, especially in war and for those who have the strength and proper training so without thinking it becomes automatic and instantaneous for them and their trained muscle memory to operate them, but the double action revolver will always be with us for all the above reasons I described. I love em both, but for all the above reasons I have to say that in my opinion, the double action revolver is the best handgun for domestic self defense.
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) ... That said, no, new features don't do it for me. On the other hand, for example, Ruger offered the medium frame SA flattops in .44Spec and .45 Colt ... That I jump(ed) on. Lasers, pink, green, stupid safeties, thumb rests, etc... Nope... No appeal.