Comment by notnullorvoid

There are better candidates to remove from the spec than XSLT, like HTML. The parsing rules for HTML are terrible and it hinders further advancement of the spec more than anything. The biggest mistake of HTML was back peddling on the switch to XHTML.

Removal of anything is problematic though, better off freezing parts of the spec to specific compatibility versions and getting browsers to ship optional compatibility modes that let you load and view old sites.