Irc send USERNOTICE on reward
IRC could send a USERNOTICE on any rewards obtained by the viewers.
In that way we could automate some rewards without changing much to the most popular bot format : a IRC client without any Pubsub implementation.
Current IRC format allows to automate custom rewards with mandatory text input via custom-reward-id.
So we have to force text input for these rewards, and it's only an extra step forced to viewers. As this extra step is not necessary, and most Twitch user-related actions are handled by USERNOTICE events, it would fit nicely in this event.