But the RAM requirements were crazy, 8MB RAM in the late 80s which is understandable for what the machine the was offering.
Interface Builder is nice, I remember trying to develop GUIs on Amiga with intuition.library and wished that there was a drag and drop program to build the source code. Running NeXTSTEP 3.3 on Virtual Box and trying to get it running on my early 2000s laptop :)