So everyone is dreaming for their own version of the web / browser. As a game developer I was just thinking couple days ago the browsers should only provide the lowest level rendering, audio, user input and networking API, let users provide anything that they need on top like HTML/CSS/JS engines and network protocols. Here the author talks about a Markdown web, I would argue this should be built on top of my low level browser, there's never going to be an answer. Let's just start building, the fun is immense designing and building protocols like this, of course it won't change the way the mainstream web but I really like how projects like gemini turned out, having its own scene and supporters
That would absolutely wreck performance, particularly startup times. You're not going to beat the performance of having 100 open tabs share the same highly optimized PGO-ed browser runtime by replacing that with 100 different runtimes. You're talking about downloading and keeping a small browser engine in memory for every page.