HTML5 feature request

Multi-document pages. I'm too lazy to check specifications.

Not just that server-side #include virtual bollocks, but some kind of <file location="/other/file.html" /> bollocks. I don't want shitty <frame>s. Nor do I want that javascript AJAX or whatever shit.

If images and stylesheets are kept in cache when they haven't changed, then why not (for instance) keep the 19 threads that haven't changed since your last refresh on /prog/? A whole 20KB every time seems a bit wasteful for what is essentially < 100 bytes of information.

>>5
T^EX syntax is disastrous and barely works for its stated purpose of typesetting. It's also too focused on appearance rather than semantics, which makes it unsuitable for a hypertext replacement, given that the WWW is now accessed from many different types of devices (mobile phones, for example).