Can you give any practical examples?
I can't imagine myself how MorphOS wouldn't be as much Amiga as OS4 for example. Same directory structures, starup files, shell behaviour etc like on Amiga always... UI is even more configurable because it's MUI, which is also well known from Amiga. You can tune the system with same existing scripts, shell commands, devices, datatypes, libs, handlers etc...
Most parts of MorphOS are directly continuation from Amiga (MUI, TurboPrint, AHI, SFS, CGX, Poseidon, etc. I've used to use all those on my A1200 before MorphOS). And heck, Ambient is MUCH more configurable than WB ever was, even with the patches (and Ambient resemles those patches in many places). Window gagdets etc are the same like on Amiga, but also extended to have new (configurable) functionality like getting windows to full screen more easily and opening new screens for programs automatically etc. I just don't understand where the limitation would be?
And MorphOS more compatible with Amiga software than probably any other system (including real Amigas). Or which other system can run 68k, WarpOS and PowerUP software out of the box? And even some OS4 programs with 3rd party extension.
+1
All NG platforms (AROS, AmigaOS, MorphOS) share the same history, have a identical structure and so on. Differences are the desktop and sometimes used technologies (MUI versus Reaction, CGx versus P96, Poseidon versus the USB stack in AmigaOS and so on). There are of course differences in the inplementations (f.e. of the libraries). The most obvious difference is the desktop but even in the old days there were different desktops like original Workbench (3.1.), then 3.5 and 3.9, Scalos, Magellan. Nobody would have said that a Amiga with Scalos is no Amiga.
But perhaps a small idea... someone could create a tutorial how to make MorphOS as similar as possible to AmigaOS (including Ambient configuration) or a distribution with all preferences that can be easy installed.