When I issue the command fortune to my rbot installed on Gentoo Linux, it says "exec of /usr/games/fortune led to exception: No such file or directory - /usr/games/fortune". This appears to be because fortune is at /usr/bin/fortune in Gentoo.
Either an option to specify the location of fortune or the ability to run any fortune in the $PATH would fix this, the former giving the advantage of allowing the use of custom quote programs.
P.S. For some reason the command excuse returns "the excuse server is unreachable :(". Presumeably this feature uses a port 666 BOfH server? There are several around the internet, and being able to specify the excuse server too might help with this...