@kmeisthax Apologies for the extended delay in responding to your post.
As you noted the quota disabled functionality in the currently old testing channel variant of Rockstor is very much broken, and in multiple ways, and so it was difficult to step in with a fix/workaround; bar building from our source code on GitHub of course. But as per your:
I would like to relay that the Stable Updates Subscription ‘shop’ has now been re-stocked.
Thanks for your interest in helping to support Rockstor’s development by subscribing to Stable Updates.
Hope that helps and as per the linked issue; ‘plans are afoot’.