Good point. Uncompressed archives will definitely be faster. I'd be happy to legislate uncompressed archives, except I'm worried that not all tools commonly used to create zip archives make it easy to turn off compression.
Don't be so sure about speed. If the archive is big enough and the OS bad enough <wink>, it may be faster to uncompress than swap. I always compress at 9, and have only seen speed ups of 1 or 2% with compression turned off.
BTW, .pyc's compress quite well.