As suggested by MyPaperTown:
Image Deployment (and capturing?) via PXE would be great, to set up multiple devices in a short time. Since I am used to deploying many devices at once, that would be the only feature missing before I could fully switch to OpenUEM!
I know that this is a really big request and nothing that can be added within an hour, but maybe it would be possible to include something like Partclone?
Reference: https://partclone.org/features/