This idea has potential. I don't use Discogs, but if some big site used Hive for their commenting system then it could bring in a lot of users. If someone could provide an easy way to integrate Hive comments into an existing site then it could be attractive. The site owners would not have to worry about storing the comments as they would be on the blockchain.
I hope you can find people to move this forward.
What would be most preferable, is for the HIVE community to build an integration framework through which not only the integration itself is made easy for external parties, but it also holds all the necessary features incl HIVE wallet, statistics and monitoring stuff a professional company needs. I believe we are missing this. I even think such an integration framework could even have a business model, like a subscription service or something. An honest commercial business can be created around such an integration platform.
I also think we need a go-to webpage for such companies in case of questions about and around the HIVE chain. The latter could possibly be the reason why we need at least a part of plan A2. My experience is that any professional company wants a telephone number they can call, in case of issues.
Let's see if I can get some traction. I do hope so as well!