Hi, so I found a new application when I was looking for a way to work in all my google drive files Offline, founded an application that does that in a way that I think is a must in Insync.
OverGrive is the name of this application, they actually convert any google drive into a Microsoft Office or LibreOffice file directly into your synchronize folder , so you can actually open those files in your computer. They still remain as a google drive file when you go into google drive website, so they actually convert the file so you can work with it directly in your computer and reconvert the file for you to work in Google Drive.
I just hope Insync take this idea and we could get this functionality some day in the near future.
Really hope a moderator read this thread and look into this application.