This is an excellent idea. I just bought the 3 plug power strip, I installed it, I upgraded the firmware, I added it to the homekit and it seemed to work fine.
Unfortunately after a few hours, the power button light started to flash and in the homekit and Meross app appears greyed out. It is just a few feet from the router.
If it is going to be like that in the future to be necessary to reconnect daily, I will send it back to Amazon. I wanted to set my automation based on my home presence, but it has to be reliable.
Did you have any problems with the Meross plugs?
Did you make the working? Are they reliable, don’t they disconnect?
I’ve been using Meross plugs for about two years now, and have several power strips which are at least a year old and they’ve all been very reliable for me. It sounds like you might just have gotten a bad unit, it can happen with any electrical device. 
It has been working great for us since Feb.
The Meross plugs have now stopped working as a presence device option. Worked great for a long time now it is not automatically updating with out going in and refresh the device. Notified smart things and they recommended unlinking meross and re-link back. That worked for a while and then broke again. A Presence device is just so undependable.
Anyone else having trouble with your meross plugs status refreshing in SmartThings.