I really like the idea of a GSD plugin environment as mentioned in PR #118. I think this needs the same structural rewriting as BMAD did with v6. You can use the BMAD system for so much more than coding: content creation, video editing, automating tasks...
Unfortunately, BMAD isn't optimized for Claude. All in all, it takes more time and compute than using subagents, skills and slash commands.
Do you plan to modulize GSD or implement a plugin system? Although I must admit, that I don't have a good idea, what that would mean in the context of GSD.