A lot of those outdoor destinations even seem centered around a movie theater now, which one might predict is also on the decline - though every time I've visited these places, they seem pretty packed. (At least, on weekends.)
I find everything I need/want in stores that are either standalone or in small (10 storefronts or less) shopping centers.
Los Angeles is an odd city, one that operates in a much more urban way than it looks on the surface.
A new approach: Anchor stores, entertainment, utility, accessiblity, asthetics, a spectrum of economic appeal, grocery stores. Owners can be demanding of rents to some extent, but when they drive out (or never had) a movie theatre or grocery store, they are losing the "single destination for lots of what you need" and "nice place to go" value.
Of some LA malls, I think the Fallbrook Center [1] has rebuilt itself well, regarding:
* Entertainmnet-wise, AMC Theatres rebuilt the old shoebox-y 7-screen multiplex with way fewer seats. Moreso, every movie theatre seat is a wide-width, electrically-powered recliner including footrests! What used to be 20 rows of seats is now 7 or 8 for one screen, so prices are a bit higher. One can /reserve a seat/ via Fandango over the Internet (fee refunded by AMC) so one doesn't have to come early and wait in line for "a good seat"; they're all good and one can book them in advance. The theatre feels much more full, and seems more popular.
* By "spectrum of economic appeal", specifically, Fallbrook has /three/ full grocery stores (a "Ralphs" (Kroger) supermarket, "Sprouts Farmers Market" luxury grocery, and a "Trader Joes", plus two more department stores that include grocery sections: A Target and a Walmart.
* Utility-wise, it's got a Home Depot, a 24-Hour-Fitness gym, a Chuck-E-Cheese (hat tip to Nolan Bushnell)
* Accessability-wise, there are street lights at mid-block entrances for auto traffic, and bike lanes on the streets for bicycle traffic, and bike racks (though I'd like to see more of those).
* For asthetics, there are planters and small stand-alone buildings facing the street (urban-style). This broke the ugly old impression the prior desert-of-asphalt a hot summer's day brought.
* Instead of a food court, the small buildings facing the street are a mix of stand-alone and multi-tenant places to eat, both sit-down (indoor) and walk-up bar with outdoor seating. Market diversity here too: Starbucks, Jamba Juice, IHOP, a lobster specialty franchise, and a non-franchised grill (Tikka grill) and non-franchised Vietnamese restaurant.
They're doing fine, there is such a diversity of things to do as well as things to get there.
[1] https://en.wikipedia.org/wiki/Fallbrook_Center
Edit: grammar, clarity
Yes, retailers face heated competition from the likes of Amazon, and yes I am not the typical mall demographic. But the malls I know—assuming they have a spectrum of trendy retailers—tend to be just as busy as ever when I have reason to visit. I hate the crowded parking lots as much as I ever did.
If they're stuck in the 1990s with Sbarro, Foot Locker, and JC Penney, yeah, they're probably suffering. But that's just not keeping current with consumer demand and isn't really an indictment of the model in general.