Finally, ScriptEase itself would have too many legal troubles being used by anyone, but I do believe just about everything needs a script language so it can be altered and customized and personalized and applied to infinite new purposes (and not a new one invented every week, just something boring and stable).
If I were to revive something from ScriptEase, I've often thought it should be the ideas behind the test environment around it. Where everything that can go wrong will go wrong and it must still survive.
SE was never "open source" in the standard sense, although almost everyone who licensed it got the source. In the very early nineties I was contact by people to say that what I'd been working on should be "open sourced" in the "free beer" context. I needed money to pay rent, put shoes on the kids' feet, and stuff like that, so didn't understand how to get paid for free software. They said "people will pay you to customize it, or to fix bugs" and I said "it's already ultra-customizable and I don't release software with bugs". I kind of get it now, and if I could talk to my old self I would tell self to open-source at least parts so that there was no reason for anyone NOT to use it. So now I'm working on inventing a time machine to go back and tell myself that and A LOT of more important things, but the time-machine work is going very very slow.