Don't worry about smart home device compatibility. The cloud will take care of it.
It's an odd place to be...
A few years back, I was at an industry round-table - at the time, the concern was about security for mobile apps, and over the top applications.
One of the questions posed to me specifically was about federation of those apps into a common gateway interface to prevent spam, malware, and other abuse..
I'm ex-telecom, and at the time, I was the SMS/MMS message wrangler for a good size mobile operator - and my answer was fairly surprising... even amongst my peers in the industry, as there was a real drive for federation and more content management at the time... and also to monetize some of the OTT content...
"for the services we provide directly - we'll do our best to protect them, and provide the very best experience for our customers there
For the over the top providers like Facebook, Google, iMessage, Instagram, kik, whatever, it's up to them to protect their users - we'll do our best to provide best of class data services and devices, as all try to do this, but for those application providers, the onus is on them to secure their services and protect their users, by federating that content, it does not add to the user experience, and introduces cost and complexity to our platforms"
(in our company's context, we didn't charge for SMS/MMS - as SMS is essentially free, and MMS was on the downslope anyways because of the OTT apps - even then it didn't cost us much, and FWIW - our messages/sub/month was one of the highest in the US market)
This was a few years back - 2013, and the situation hasn't really changed there - if the Carrier offers services, as long as it's a vertical service, it has a chance to work -- but don't expect them to keep things secure for application services they don't directly offer...