Got to be fair, since the 1.x update it got so much more usable for me

I know natively you can only pin an app (puts app on lock screen basically), but never looked if apps have this feature

On another note. A zigbee network is a mesh network set up at pairing. Moving your host around will not re-generate the routes in the network and make your devices drop.

Pair your devices (and hub) in there position they will be in when installed.