We’ve had a few days of discussion on this, and I think the upshot is that we need to solve the general versioning problem now. Wei Tang has a few proposals worth considering, plus the discussion so far has surfaced a number of problems and ideas.
For EIP-615 I think that the spec should just state that versioning is needed and require a wasm-style version header.
For a versioning solution I think work needs to continue on Wei Tang’s existing EIPs, or a new one that supersedes them. What do you think, @sorpass? And are people able to help?