I will try the RTMP/RTSP live streaming plugin, but for what i can understand from source code, this is basically an Android app that uses a all-in-one dependency -pedroLibrary) for encoding and streaming.
It seems like solutions exists for Android apps to implement NDI, like GitHub - WalkerKnapp/devolay: A Java binding for the Newtek NDI(tm) SDK. but i have no experience (yet!) in Android development (neither for the Theta).
The THETA Z1 has better heat management for live streaming compared