The one complaint that I have heard about the Caseta dimmers is there is not tactile indication of the "ON" button on the dimmer control. I just bought a new dimmer and when I unboxed it, I noticed it has a little "Pip" (or bump) on the "UP" button. Not a huge change but appreciated. Not sure why they did the "UP" button rather than the "ON" button . . .
Apologies for the photo quality, I have circled the "bump" in red.