I know this is a long shot especially given the challenges HELM has been having on sourcing their hardware, but here goes.
Rather than providing a stripped down version of NEXTCLOUD, why not offer a new member to the HELM family - the HELM Collaboration device. This would be a full version of NEXTCLOUD (or that OTHER one) and would differ mostly in terms of storage.
If you wanted to have more fun with the line, choose a different form factor. I have a few HELM email triangle devices and a Norton router geodesic thing - I could see a whole shelf of odd shaped appliances giving me a private, secure, and person ‘tabletop datacenter’ by adding the HELM Collaboration Obelisk.
If you do this, do me the favor of putting the indicator lights and switches on the front please.