File manager 7-zip (*.7z) Handling: unzip, and zip files
7 zip is much more effective than your already handled zip format.
I can result at least much smaller archive file size.
Also, it is much faster.
So cPanel users could work faster and use less bandwidth. Ideal, isn't it?
"7-Zip compresses to 7z format 30-70% better than to zip format"
I hope, it's enough reason.