"..that way we might finally start seeing certain software that runs correctly without requiring admin rights.."
Amen!
But most modern user software (surprising how much, apart from system orientated utilities) runs just fine on a standard user account in Win7 and above.
People just have to wean themselves off doing their daily farting around as quasi-root in Windows - it is an invitation to malware.
No *nix user would dream of doing so.
Mac