Romain Robbes wrote:
>> hotkey. we already have them and they work quite well.
> 
> but they are slower when you have to explore deeply (5-10 senders/ 
> implementors)

I don't understand this. How exactly are they slower? Perhaps you could 
use KLM-GOMS to sketch out a quantification of some of these design 
decisions:

http://www.rpi.edu/~glasse/HCI-HOWTO/ar01s03.html
http://www.cs.umd.edu/class/fall2002/cmsc838s/tichi/printer/goms.html

Tony