I imagine this one flying over the head of many users, nevertheless, it’s a valid concern.
Ever thought about compiling code on a ramFS drive instead? BiPolar made a nice forum thread about using it to compile haikuports recipes, you can find it here.
Is there any opensource VOIP app around? If that’s the case, maybe somebody can try and port it over 
A minipc sure looks like the perfect fit for Haiku, most of them have respectable CPUs and not having hardware acceleration for whatever integrated GPU is there is usually irrelevant for most tasks you’d run on them either way.
@alpopa A NAS would definitely be an interesting solution for file-sharing between systems, I’ll have to keep that in mind for the future.