How can we improve WHMCS?

While small files to download works great, anything greater than a few MB can't be downloaded. When uploading files to be downloaded, nothing indicates that the file is too large and that customers will not be able to download their file. While most of the downloads would work, the one that goes over would not and it would be unknown until it is an issue.

WHMCS should be able to allow a download of larger files. If not through the PHP by using chucks or whatever is needed, then a link to a file hosted on the same site that would allow the download of the larger file.