Your comment reads a bit like "we cargo-culted the things we could see in the Smalltalk environment, but didn't understand the underlying philosophy or elegance of what had been made; what's left to learn?"
Seeing features you like and porting them to a system where you can use them isn't cargo culting. It's progress.
Unless you miss the bigger picture. Of course you can use any part you like but if the main value comes from a combination which you are no longer using while you still thinks you're using the same method/idea it might be seen as cargo culture.
Your comment reads a bit like "we cargo-culted the things we could see in the Smalltalk environment, but didn't understand the underlying philosophy or elegance of what had been made; what's left to learn?" (I know that's probably not what you meant, but I feel like there's a lot left to learn from Smalltalk and the tools that were built with it).
[1]: http://en.wikipedia.org/wiki/ThingLab (see link 4 for the video; it's really fun to watch).
Also check out: https://github.com/cdglabs/thinglab -- there's a link to a St-78 image with ThingLab. Also interesting to note proportional fonts, text selection (by Larry Tesler) and popup menus, all of which I thought came later...