New device suggestion
I'm not sure if Kasa/TP-Link read the forum or even care about suggestion, but there's two device that I feel are missing and would be very good to add to the kasa line up that wouldn't even require much change on the actual device.
The first one is a light switch that use a dry contact. The use case here is because the conventional light switch use 120v, it's impossible to use these switch to control other device like 12v switch. This mean currently, you need to create your own relay with stuff like shelly and find a button to use it. Having a nice kasa light switch that can do all of that would be very good.
The other would be an outlet that have 2 distinct lead so it can be used in a kitchen (with a GFCI breaker, or even better make it GFCI!).