I gave up trying to “future proof” for home automation about a year and a half ago. The technology is just changing too fast. 
Instead, I shifted to a mobile phone type model. I set aside a certain amount of money each month to pay for services and equipment, and I buy each individual device expecting to replace it in three years. And that includes the hub. If I end up using a device for longer than that, that’s a bonus, and I have more money in my home automation budget to play with new gadgets. But I don’t budget for a smart light switch the way I budget for a dumb light switch anymore.
That said, my own favorite light switch is the Lutron Caseta working through the Lutron SmartBridge Pro. Very well engineered, doesn’t put any extra burden on my Wi-Fi network, and works today with SmartThings, HomeKit, and IFTTT.
I personally don’t want to have more than about 20 total WiFi IOT devices Because they use up a slot on the router and you can run out of slots pretty quickly. By using bulbs That work with the hue bridge, sensors that work with the hue bridge, and lutron switches, I really lighten the load in terms of Wi-Fi addresses. But if you can make it work at your house, go for it. 