I know it's not possible at the moment (correct me if I'm wrong), but I think it'd be a good feature if we could add files to devlog posts, without having to add them to the game page.
I read somewhere that not allowing that is intentional, so that there is a centralised place for all downloads. But I personally would like to allow people to download 'dev' versions of the game specifically from a devlog post, without them ever showing in the game page.
Alternatively it would be good to be able to add some description to the uploads of the game page, or somehow categorise them, otherwise having many versions of the files becomes quickly messy.