i did that for a time, and sometimes still do, but i found
it typically caused trouble because no matter how
esoteric the `left to do' list became, some people
concluded ``oh, it's not yet finished'', which was
strictly speaking true (but a bit silly).  i later decided
that if someone was capable of finishing the things
on the `to do' list they were capable of working out
the list themselves once they'd looked at the code;
either that, or the list didn't really matter.