Reading this sub-thread, it struck me that a good way to make PEP 562 more likely to be accepted is to launch an over-the-top attack on it. Then more moderate people - who were/are not necessarily in favour of the PEP - feel pressurised into defending it.
Hah! Watch this space for my vicious, vitriolic, withering attack on PEP 463 (Exception-catching expressions)! :-)
Best wishes Rob Cliffe