Hi Ben, I've used templates on over 100K pages. Nothing against them :)
Where I find it lacking is when lets say you have an application where you may have 10 functionality areas with a few subfunctions on each page. This starts to get really messy (I think) and hard to maintain. Especially if a functions is carried out over several forms.

We aren't usally just dumping a form into a nice background but actually modifying the forms and tables, etc in response to the actions and state.

Update
Another thing to think about is that if your program is generating your forms etc, using server side persistance, you can know what your expecting to receive on the next transaction as far as incoming parameters, what is and is not a valid state (relative to where they are),etc to stop people from hacking your forms or submitting invalid or irrelavant data (or resubmitting for that matter).

I agree for a lot of things templating fits the bill. Just it falls short for a lot of what I'm doing.

-Lee

"To be civilized is to deny one's nature."