The current way Python enchancements are officially considered is described (insert-link).
This forum might be a better way to capture and discuss enhancements until consensus is achieved - then put through the more formal process.
For now, put proposals forth here if you want to try and kick them around a bit and get some feedback before writing an official PEP.
Enchancement Proposals
About Using Wiki to Discuss Enhancement Proposals
Thoughts here on moving the official discussion of Python Enhancements from email to wiki.
See also ["PEEPs"].