@differdrift sorpaas states the "wrapper block with strict consensus rules" route will take an indeterminate amount of time, a couple times in the proposal.
...and thus massively increase the development time.
However, the disadvantage is that it may take a long time to be implemented, as it relies on a feature not yet ready in Substrate.
To me, it seems to be an obvious indicator that if we went that route, we would have to consider a long road to implementation (if ever?). Is it necessary? I do not have enough knowledge to answer that. I presume you could err on the side of caution and say strict consensus is better than relaxed consensus.
Additional questions could be:
- What is a reasonable time estimate to build in the additional complexity?
- What is the cost-benefit to this? Maybe it is not really necessary for Ellaism, but could be more important for a large chain, such as Ethereum.
The Core Paper site has a lot of great information, largely technical, but worth reading.