Perhaps such repetition is a sign that *something* needs to be done...
It's not. Most such repetition is due to new people who have not read the last 20 years of archives. :-) (In case the smiley isn't clear enough, parse that as "all the new people who aren't cray-cray".)
That doesn't mean there's nothing to the idea, it just means that *mere repetition* of certain proposals is only a sign that "great[sic] minds think alike," while Python development is attracting new people at a high rate.
Repetition of certain arguments *in the same thread*, on the other hand, is often a sign that a meeting of minds has not be reached, and that can be symptomatic of problems (though it's not necessarily an indication of the necessity of a proposal).