Funny, I was just thinking of creating a new dialog template that mimics the one found in SCUMM's games. However, it's quite the task, not sure when I'll find the time to do that.
Magistross Wouldn't it be somewhat quick to modify the template you already have?
I just tried to modify mine and although it's kind of messy and ugly, 
Zebbi, you can probably get some inspiration, here is my example.
And you should dedicate some efforts to create a proper script editing and testing tool, for obvious reason.
I still didn't make one