Do we have a concrete description what “v1” entails? I agree it would foolish to constantly extend the scope and this may very well be something, which can be made optional. However in order to make it optional, it would be nice to clearly mention this problem and the potential solutions, and why v1 doesn’t include it.
I think if enough reason and motivation is shared, someone solely concerned with Eth1 could pick “it” up, outside of Eth1x.
Lastly, there seems to be a strong affinity for purity based on the Stateless Summit, but of course there can be different levels of purity achieved.