[BUG] Claude is never thorough with Impact analysis

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

This is a long standing behaviour of claude even Opus

Whenever it finds one related thing, jumps right in Okay, I have fixed it, linter passes all good.

But never really does a deeper impact analysis. This is where GPT 5s excel at, I agree they are slow, but they get it right, Never does stupid changes.

I feel claude is only good for day 1, then to fix claude's mess GPT is required

What Should Happen?

I think there's need for a chain of thought mode, or a different model that does this, the GPT way of thinking.

Error Messages/Logs

No error, but my frustrated curse words gonna make claude feel sad, if it can

Steps to Reproduce

Just ask it to fix something where impact runs deeper

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

0.0.0

Claude Code Version

2.0.65

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

The problem runs deeper within model itself, though I like claude for its speed GPT folks are adding COT behind the scenes I am sure to do the thinking, which is great for certain cases like debugging and impact analysis, having sub agents is great if sub agent is dumb, what's the point anyway ? Make a sub agent that does CoT