IOMMU GPU passthrough with device selection would be a helpful feature: https://www.google.com/search?q=gpu+passthrough+qemu
LXD manages qemu VMs and supports snapshotting, live migration, and a number of storage drivers: https://news.ycombinator.com/item?id=45270468
virtio-gpu-rutabaga works with Android VMs on qemu, but does it work with Win/Mac/Lin: https://news.ycombinator.com/item?id=42921315
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I would love that so much. That's the feature I wanted to play for the longest while, but the shortage of time just doesn't let me.
That would be a jixe step up.