I just find it convenient this doc hits when ZK Snarks is in private testnet. I don't think any merger would benefit SDC until ZK is released and the market reacts accordingly to find its price point because that is the true value of SDC.
To put it in perspective, this would be like Litecoin coming to Dark a week or two before the release of Masternodes and offering to merge with DRK. It might sound good initially but may not benefit Dark long-term at that point. I think if a merger were to happen SDC can get a better concession if the SDC camp just waits a few days.
But it was the SDC whale who decided to post a months old proposal right now. Ask yourself to whom it is convenient.
Either way this brings alot of new eyeballs to SDC.