I've been mildly annoyed that every component-based front-end library's Hello World is a counter, with a button to increment the count. But it seems like no personal knowledge management systems have a way to actually embed an arbitrary component like that, with its state. It would be actually useful for games and counting reps in various contexts.
We just opened signups for Cuttle, our browser-based 2D CAD project. Our beta community has made some cool designs for laser cutting, vinyl cutters (Cricut), pen plotters, and CNC.
The 4 points on the homepage are what set us apart from existing design software: live modifiers, reusable components, parametric design, and scripting. And being able to compose those elements non-destructively.
I've been hosting a handful of WordPress sites for friends for years. I thought my setup on a shared host was secure enough, until some of them got this Japanese keyword hack. It's a major pain to follow these directions to clean a site out. Enough of a pain that I've been rewriting the sites with another CMS / site builder, with hosting that I don't have to manage.
What about something more fundamental? Do we really need layers of management? There are interesting examples of more-agile organizational structures examined in https://www.reinventingorganizations.com/