We did have alot of anonymous readers before. Being able to download without creating an account will be appreciated I am sure (even if we never hear them say it).
I know that the many years of uploading large files that were extremely temporary (such as game files to show a bug). We still have the entire Dom2 forum. Being able to overwrite will help. But I also will totally understand any maximum that is set. As in the past, I will offer a chance to create a weblink on my server for any Dominions file which exceeds the limit.