1.) A subset of modern HTML / CSS, custom Javascript. Remove anything that isn't needed and especially anything that affects rendering negatively for no good reason.

1.1.) Possibly: Provide versioned, vendor neutral versions of js to allow for autocomplete.

2.) Same as 1, but with custom JS. All js must complete in a specified number of cycles. User interaction gives extra cycles.

The point of 1 is to:

- for companies: massively lower the barriers for new browsers (remove lots of backwards compatibility and the huge problem of JS)

- for security conscious users: provide a safer way to browse the web

- for users generally: provide a way to browse the web faster and more comfortably

- the point of 2.) is to provide an approximation of what we have today but in a way that automatically limits developers from abusing JS.