That one is the leanest, fastest and most elegant Amiga option ever made, it's probably very similar to what Amiga had been today, hadn't Commodore gone bankrupt.ng by far inferior performance.
Only one comment to this sentence: No! While I really like my MorphOS 2.7 on Pegasos II - *if* Commodore would not have gone bunk and survived in it's global form, AmigaOS would/could have been far, far, far in front of both AmigaOS (current) and MorphOS.
It's a difference between a tiny handful of semi-hobby coders like we have today in all variants (AROS, MorphOS, AmigaOS) struggling for more or less a decade now or having the backup of an R&D departement of a global player (which Commodore was!). So, whatever would have come out from this theory, you can be sure it would not have looked like MorphOS. And not like current AmigaOS or AROS in this respect.