I think the idea of targetting the title tag as a place holder because it has no content is pretty neat!

I don't aggree with some of the other things said here- I suggest some of us may be missing the point- if I understand it properly.

It is that no funny code needs to be introduced. At all.No funny id attributes, no <TMPL_VAR FEEDME> tags..

Am I to understand that we can target the the value for 'username' input field because it has no value?

The syntax you suggest seems to call for some crazy autoloading, (which i would suggest against, because if this actually worked out, I would personally use it in cgi, and it would maybe screw up resources- yes, for what i do, yes. ).

If I get the idea right, I think it's sexy. Implementing this and spreading it.. might be an ungrateful demon child who will never ever say please or thank you.

I think refining the concept, before the code - is key. Start a blog or something with the idea.

Is it worth it? This will be a real issue. This whole thing seems pretty simple an idea. That's how you know it could be hell hours and bugs galore.

I adore HTML::Template. Let me emphasize that.. i love HTML::Template. And I gotta tell ya, the system you suggest is the only thing that tempts me to deviate.