Sure that could be another pull request. It's essentially a code fork where if there's a symbol without a block is passed then the symbol is sent.

The problem is where to attach (register) that method. If your'e attaching it to ```self``` then you'll have to send ```self``` as an argument.

I think it's open for discussion and it could be considered a whole new feature (support for symbol argument for ```on_dispatch_error```).