debug pkg todo list?

According to its `ChangeLog', `debug' elisp package have not had major changes of functionality for too long. In particular, it is overdue for emacs sync. AFAIK, the most notable drawback of its current state is lack of `gud-gdb-complete-command' implementing gdb-style command line completion. Is there a single todo list for things like this? Is there currently any policy of porting emacs features into `debug' package? If someone wants to tackle it, what procedure should he follow?