That would certainly be a plus. I have at least one missing lightswitch in my kitchen, and adding it would be rather complicated. Still it seems like overkill to invest in IoT to solve the issue of my lightswitch being 1,5m from where I'd want it to be.
The whole "light atmosphere" is something I already have, I just have to go around and turn on the lamps manually. As for the Alexa, Google Assistent or even Siri integration... I trust none of the company behind those technologies enough that I'd allow them to have a microphone in my home, constantly listening. It is beyond creepy.