> 1) MM compression (WinRAR beats 7z at compressing WAV files).Pretty rare application, IMHO. I believe the percent of users needing to use and archive wav files regularly is relatively small (even among jsut RAR users).
> 2) Recovery records and volumes.
Can you explain why aren't recovery records completely useless today and why are not volumes close to useless today too? IMHO these features were only useful during the age of floppy diskettes and analog modem BBSs.
> 3) Much better UI.
Slightly better, if you dont think of fancy icons to be a feature of the most importance.
> 4) Ubiquity.
Legacy.