I think the Qubes team is not interested in protecting against forensic analysis. They will complain about the lack of time and resources. Although the community has created 2 live modules, and modifying grub-live for Fedora (so that grub-live adds rootovl to the kernel and adds an item to the grub menu) is unlikely to be very difficult. Users will have to create these modules themselves.
But I hope that size=100% will be added to Whonix and Kicksecure, because it will make live mode fantastically effective and convenient
This fantastic guide will automatically create an amnesic live Whonix DVM in a live dom0. It’s the best solution for anti‑forensics in Qubes with Whonix