APL/J/K/NIAL

What's so special about array languages? When I look at them all I see is a decent Math library on top of a rather poor and antiquated language. On Wikipedia and sites of those languages people rave about how much more concise than other languages they are and how learning them expands your horizons and makes you a better programmer but except for higher order functions, which may have been special at the time APL was invented, but now are present in almost every modern language, I don't see any features that come close to what Haskell, ML, Scala and the likes offer.
Am I missing something?

>>7
What is it that makes them concise? The fact that it has lots of functions that operate on arrays in its standard library isn't a language feature and you can get that from array-libraries in other languages too if you need it.
It has no typeclasses, no first class continuations, no pattern matching, no elaborate type system, no lisp macros, no lazyness , no nothing.
I don't see anything in features that goes past what even python has.