> PATH cleanup helps:
> Speed up application startup
Really?
> Reduce executable search time
By how much?
> Avoid conflicts between different versions of the same tool
Any time this has happened I've just chosen which one I want and removed the others. Never been a big deal for me?
> Maintain a clean and organized system PATH
Could also theoretically result in broken applications/scripts/startups/logins etc.
Windows systems are mind bogglingly diverse; I'd never suggest automating such a procedure.