Ranking proposals for Interop 2027

The Firefox team are asking us to weigh in on proposals for Interop 2027—what features should browsers be concentrating on implementing or improving. Here are my top five: Web app installation via <install> and navigator.install(). Prompts the user to install a progressive web app. Speculation Rules API. Hints to the browser to proactively download pages in the background so they appear instantly when the user navigates to them. CSS var() in size container queries. Such as @container (width >= var(--min-width)). CSS flex-wrap: balance. Distributes items in a multi-line flex container so each line has about the same number of items. Interest invokers. The interestfor attribute triggers actions on a target element when the user shows interest, such as via hover, focus, or long-press. Those are very much in order of priority. Imagine them following a Pareto distribution; the top 20% (in other words, the first one) is 80% of my priority. But other people have other priorities: Stu, Eric,…