Will Robertson wrote:
> I'd definitely like to explore ideas like this.
> I've vaguely thought in the past what it would take to get {} braces as
> having  catcode other. I'm not sure it's feasible but I think it would
> sure be nice :)

I suspect this might be very awkward as things like {\Large Some text}
then won't work.  I assume your thinking that things like \emph{Text}
would all be implemented using delimited arguments?  (This seems a bit
tricky in any case.)  Although the user interface for LaTeX3 is a long
way off, I would suspect that this type of thing will stay.
-- 
Joseph Wright