While I agree that the MCP craze was a bit off-putting, I think that came mostly from people thinking they can sell stuff in that space. If you view it as a protocol and not much else, things change.

I've seen great improvements with just two MCP servers: context7 and playwright. The first is great on planning sessions and leads to better usage of new-ish libraries, and the second is giving the model a feedback loop. The advantage is that they work with pretty much any coding agent harness you use. So whatever worked with cursor will work with cc or opencode or whatever else.