Congratulations for the work, that's an interesting move and it allows to align resin os more with what's being used in classic traditional IoT, I think in long-term it would be possible to plug-in other technologies within Balena easily, maybe support other deltas mechanisms, and other features. Most containers are over-engineered, they are build around kernel technologies to hide some other mis-behaviour of Linux kernel sometimes it is legit, sometimes not. Anyway with Balena I think that's better for resin OS and it can be adapted for more cases easily.