Confluence, if possible, should scan the file size of an attachment prior to the upload even starting or at some time early in the upload process. Currently if you have attachment file size limits set, Confluence will only error as soon as the current uploaded file hits the limit. So lets say you have a maximum attachment size currently set to 100MB and you want to attach a 200MB file. Confluence will go ahead and start taking the upload and will only error once the current upload reaches 100MB, meaning you already sat there waiting for 100MB to be uploaded. If Confluence could some how see that the total filesize of the currently uploading attachment exceeds the limits prior to actually reaching the limit, that would be great.