It depends what you put on the drive, really.
I don't put user files on C drive, I don't install most stuff inside C drive... This makes system recovery easy without worry about loosing data.
Also minimize the amount of space required for system image backup, the smaller the amount of stuff on C the better.
Since W10 is a "service" which constantly require update, it make sense to NOT store stuff on C driver, and make proper system image backup.
Strongly recommend anyone to do so; minimize the amount of headache and complaints on the internet later. If Windows died due to broken update, only takes 3 minutes to restore.
Windows already have it's own image backup function but it's not compressed, personally recommend AOMei Backupper (freeware).

This post has been edited by digitalifelesss: Apr 30 2018, 07:11 AM