Yes, agreed, every example will help! We definitely want to continue with the tutorials but need to find the right balance between making them simple but yet correct (the difficulty for async) and also not spend time on tutorials where things are about to change (the difficulty for GPU/RDG). But while the API gets more stable we certainly make more, and hopefully more intuitive tutorials.
Until then I recommend looking into the NNE public API in source code (access required), which contains at least some hints. Also, you can get some inspiration from this tutorial, it is based on the old deprecated plugin, but I am sure you can easily update it to use NNE and maybe even the GPU or RDG interface.
I fully agree on ML playing a bigger role in games in the future. Please also checkout the Learning Agents, they also leverage AI.