I know that 40-50MB was the standard upload file size for 4Share. Wasn't that because the old size Max on there was 50MB? Since the Max has been raised to 100MB shouldn't we ask for the standard to be closer to 100MB? It would halve the number of files you need to download in most cases.
I do understand that many of these uploads are archives of the original uploads and it would be impractical to re-rar them with larger breaks, but for new files being uploaded I think it might help.