- https:// support
- scheme-relative URL support (eg. "//example.com/")
- query-string and fragment support
- HTTP/1.1 support
- HTTP/2 support
- HTTP/3 support
- Teach httpfs to understand HTTP status codes like re-directs, 404 not found,
  etc.
- Teach httpfs to look for "sitemaps".  Many sites offer a sitemap, and this
  would be a nifty way for httpfs to allow grep-ing the entire site's contents.
