My thanks to @acorn, @egg, @siran and @chris m for their thoughts and script ideas, indirect and direct, over the last few weeks on TG. The result, in part:

https://initiostar.co.uk and https://omnidisplay.uk

I used the base product we market, OmniDisplay (real-time digital displays), Icecream (video capture), Lightworks (video production) and of course Xara, to create from scratch a simple website that brought together WOW sliders and Video that work across mobile and desktop. Intentionally, the mobile variant is lighter and not all the desktop content transitions to the mobile variant. More work to do to iron-out the glitches and performance, but after a few sad TG days, maybe something positive.

Gary