If there is a particular reason why that wouldn't work, I'm not aware of it. Seems like you would eat a very tiny cost for deflate literal overhead (a few bytes

If there is a particular reason why that wouldn't work, I'm not aware of it. Seems like you would eat a very tiny cost for deflate literal overhead (a few bytes per 65,535 bytes of literal data?) but maybe you would wind up saving a few bytes from also compressing the headers.