Flying single pilot multi engine IFR air taxi will increase your capacity a heck of a lot more and more usefully though. As will hauling newspapers from Coventry to Belfast in the dead of winter in a barely lit non-GPS 1950's turboprop...
Instructing is more useful than sitting on your arse sending out CVs. But most other flying jobs are more useful.
Didn't stop me being an instructor for many years though - and in hindsight - enjoying it.
Cheers
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