I've had this idea for a while now about using XSDs in Facelets templates. I believe we should stop pretending that Facelets templates are XHTML documents and start treating them as unrestricted XML. This would give us the freedom to extend the XML dialect with XML Schema and take full advantage of the type enforcement, syntax recognition, and tooling support that XML Schema provides.
Prior to revision 2.0, the JavaServer Faces specification states that all dates and times should be treated as UTC, and rendered as UTC, unless a time zone is explicitly specified in the timeZone attribute of the <f:convertDateTime> converter tag. This is an extremely inconvenient default behavior. This open proposal, targeting the 2.1 release, extends the Locale configuration to accommodate a default time zone preference that is used by default when a date is rendered.
The first part of my new article, published today on JSFCentral, explains how you can increase the rendering performance of a data-driven, JSF-based Seam application by two orders of magnitude! The article originated out of a contract job I did over the summer (before joining Red Hat). I worked for a group of scientists to develop a data-driven application using Seam, JSF, and RichFaces. That means it comes straight to you from the real-world ;)
Every JSF component has some specific attribute set unique for it. At the same time, almost all UI components have attributes that are common for all of them. For example, onclick, ondblclick, onblur, onmouseover, onmouseout, onmousedown and so on. They are named PassThru because they are rendered one-to-one to the final html layout.