Perhaps you should've linked the conversation here before deciding there weren't enough replies.
As far as I can see, of the two responses, one wanted A1 (just the warnings-ng parser) and the other wanted B.
I'm in the former camp, and just need the reporting capability, and would favour all reporting being integrated.
If there's a parser for warnings-ng, then I probably have no need for a separate dependency-check plugin.
Is it possible you could provide the parser for warnings-ng as well as your planned implementation of option B?
I'm guessing, given your experience, you'd have the least trouble producing it quickly.