If it helps the developers of IceDrive: You could use macFUSE. It lets you use FUSE filesystems on macOS. With FUSE you can create a filesystem that connects to your cloud and mount it as a native drive. For example someone used FUSE to mount your google drive on linux: GitHub - astrada/google-drive-ocamlfuse: FUSE filesystem over Google Drive
I just published a user-guide on how to mount IceDrive as a virtual drive on macOS and Linux without the need to pay for Mountain Duck. If you want to dive deeper, you can read it here.
When you say “we plan to move away from that methode” does it mean that as a team you plan to move away from drive mounting option for all OS ie Windows included? I hope that is not the case as I find the drive mount option very convenient and practical.
I have just bought LTD deal but I am not a Windows user. I hope you will deliver a good experience for both these platforms. Please provide us with a good cross platform application. Any update would be appreciated.