i think that "should have at least a mentor guiding you" sounds a lot more better than
a core developer needs to sign on to be a sponsor
that sounds a lot more that without backing, you can't submit a pep, i guess the core devs wanted to make things easier but the sponsor thing etc put me off.
for someone using py, ideas sometimes come but since i've not yet submitted a pep, when i see a change in the flow, i ask: will it be easier or more difficult to submit peps now? i really got the impression that now chances are slimmer.