Good of you to mention SuperCard which was, in many ways, the obvious successor to HyperCard (and it was revived a few years back and died owing to lack of interest). These days Runtime Revolution fills that niche. SuperCard was kind of flaky (I developed some stuff with it) and, more importantly, took an IDE -> shipping app model (where the dev environment was pretty much split off from the standalone app). This made it more useful for "real programmers" but less accessible for tinkerers.

It's probably worth mentioning that HyperCard was incredibly stable. You could work in it for months on end without crashing or losing any work. That alone was pretty staggering for the time.