I assume you have a dynamo light, front and rear?
Nope. And I have a GPS and power meter on my bike too, but none of those are related to making it go. To my mind, it should be like sailing. You can have electronic gadgets for navigation and performance measurement, but all controls have to be manual.
Tiny tiny buttons might be ok on a phone, but when you are breathing through your arse and have thick gloves on, big buttons are good/better.
The tiny tiny button I embedded into my shifter to act as a remote for my light works just fine even with my thickest winter gloves, has survived three years of year-round use on my commuter so far, and looks a heck of a lot neater than any of the electronic shifting buttons I’ve seen.
If I was cynical, I’d say the first generation of this stuff was deliberately on the big and bulky side, so there’s an incentive to upgrade when some neater stuff comes out. I think I saw recently that Shimano are making a junction box that will fit inside the handlebars.
One feature that I would be interested in is ANT+ buttons on the shifters that I could use to operate my GPS. As I understand it, this is possible but only with Dura Ace shifters. Shame this side of stuff isn’t trickling down faster given how cheap the required electronics are.