OK. I am a way harder thinker than doer :P
I came up with a concept of having one of my PCs say stuff when he used certain powers and having it change. I have never tried to implement it. In fact I've never done any keybinds yet for my characters. Laaaaazy.
1: Make a BUNCH of Local bind files MYCRUD1 through MYCRUD100 etc, all identical except:
2: Change the local speech bind to a different text string, add a /bind_load_file <PREVIOUS MYCRUD#+1>, at MYCRUD100 have it /bind_load-file <MYCRUD1>
This should have you say something, then load a new set of binds where you say something else, or nothing at all. Each press of your button loads a new keybind then moves on. I was going to have mine say something like every 4-5th time. I wondered how it would work :)
All the .txt files would go in your live folder.
Here's the keybinds FAQ
http://forums.champions-online.com/showthread.php?t=81117
-S