Hi,

I like the option to have THREAD view but I am totally fine to do without it and just use the linear board view. I am not a developer but I would assume it is more difficult to customize a truly mobile responsive template that can handle Thread view effectively.

You should take a look to the selfhtml-Forum. This forum has thread-view and a usable mobile version, e.g. https://forum.selfhtml.org/self

regards
Micha