It can also be something that looks cool and doesn't necessarily ever get past "kinda works", but piques the interest of the core dev team and they take steps to make it work even better, resulting in the ultimate "deprecation" of this sort of thing by virtue of it being even better integrated into the core.

I don't have the context to judge the probability of that in this specific case (lots of technical nitty-gritty comes in to this sort of thing), but I've certainly seen similar things happen in other communities.

how about adding this to debuggers for better object-views? (could it be possible to provide near-js/python/java level of obj view?)