Just got one idea for Claude Code sub-agents feature - What if each service provider has its own sub-agent for you to use instead of just MCP? e.g. - @tailwindcss v4 agent - @vercel AI sdk 5 agent - @Netlify deploy agent - @supabase agent ... Each is filled with specialised latest doc knowledge & workflow, and can be called on-demand when implement relevant features This feels like better than MCP