Hope that mediawiki can add a setting like $wgDisableprintable
Not every wiki need printable css. At least my wiki and my friends' wiki don't need this function.
If There are a setting like $wgDisableprintable = 'false';
That will be great!
Sorry, but when you do not need a print version, then just don't print your wiki. I don't get what problem you have.
Well, it would save the inclusion of /skins/common/commonPrint.css