For comparison probably a good start is the API (I'm somewhat familiar with dokan, used it several years ago for some project)

https://github.com/billziss-gh/winfsp/blob/master/inc/winfsp...

https://github.com/dokan-dev/dokany/blob/master/dokan/dokan....

It's really the edge cases that one might run into, where things no longer work well, but I don't recall right now into what problems I've run into (What I did was for the xbox360 devkit to read files from my HDD, rather to copy to it, as was required by the sdk, but I've achieved only 5mb/s, while copying was 10mb/s - the only benefit was if you wanted to read on demand, a bit and for fun).

Sony later used dokan for their devkit in PS4 I think? just found some info here: http://www.psdevwiki.com/ps4/File_System_Driver

There is also CBFS from Eldos -> https://www.eldos.com/cbfs/ - (commercial)

I have not looked at the technical side, but one big thing is the license. Dokan is LGPL (the library is LGPL, the driver GPL). This one is released under the AGPL, though. :-(