[flexcoders] Need alternative to callbacks?

[wwwpl]

We would like to get rid of callbacks in our project.  Recently I had
to change about 15 different callback function signatures.  It took a
long time to get everything working again because the problems had to
be found at run time instead of compile time.  Does anyone out there
have a good solution to replace callbacks?  It would be nice if Flex
did signature checking at compile time for callbacks.