Me too … . Although, one small upside to the Mexico edition being postponed is that there’s more chance I could attend in 2021, so hold that thought.
I do think the ideas of Zeitgiest & Activity Journal have potential, every desktop already has the concept of ‘Recent files’ (often implemented in a pretty annoying way), every browser has the “Awesome bar” concept, etc. The design aspect is very tricky because you’re making things dynamic rather than static. Testing a UI is a lot of work (ask Clarissa for example!). Now imagine the UI is different for every user, and different every time they look at it, suddenly the testing matrix has become practically infinite.
I don’t say that to dismiss the ideas, more to say that we are probably correct to have taken a conservative attitude up til now. There are definitely some cool research projects to be done in this space, I can imagine that research on voice assistants (see MyCroft and Almond) will drive some of that research, as a voice assistant basically has to personalize itself to user preferences.