Thanks for your kind words and all the goodies you have added to KM over the years …
As I mentioned briefly, this is for my elderly parent, so the simpler the interface and the number of interactions to provide the solution will win. The challenges of providing solutions for seniors abound, with their failing of the various senses (sight, hearing, touch, voice), slowing down of the mental processes, and even through various forms of dementia the loss of the ability to put short-term memory into longer-term, i.e. what most people would call learning.
All the excitement with voice/touch interfaces and mobile devices, at this point, are for the most part lost on seniors. All of the movement to cloud-based and streaming also can provide quite the challenge. The senior facilities for the most part are very cost-sensitive and tend to provide recycled or low-cost internet connections.
The planning for longer independent living for seniors in my view fails to take into account the complexity of the technology and the interfaces. Even most of the staff at the senior facilities have a hard time being able to support these technologies.
Sorry for the rant. I just thought this might suggest, that at the moment, there is a considerable challenge, but also an opportunity, to provide custom/alternative interfaces and methods for certain portions of the population. Design principles have been primarily driven by the younger cohort.