The Epyx Fast Load Cartridge did much more than just increase the speed of data between a 1541 disk drive and a Commodore 64. Features included a Machine Language Monitor and Disk Tools.
The Disk Tools, accessed by pressing the pound symbol (#) at the READY prompt allowed the following features: Directory, Copy Disk, Disable Fastload, Edit Diskette, and File Tools (Directory,Copy,Delete,Lock,Unlock,Rename)
The Disk Editor may be a tool useful to you - I never used it since I was mainly interested in games, but the Fast Load cartridge is ubiquitous and commonly available. Not sure how to mount one in VICE. You can easily obtain a FastLoad manual with a cursory google search.