LAX is trying, they really are. I'm flying out of Tom Bradley International Terminal next month, and once you get past TSA it's actually quite nice in that
one terminal. They have double-decked A380 jetways and wide open spaces. And especially if you are spending an hour waiting in an airline's premium lounge upstairs, it's almost like London or Dubai or Tokyo. Then you encounter a few typical LAX employees and their slug-like sloppy service, and you are reminded you are still at LAX.
And the 90 to 120 minutes it takes to get into this one terminal from the freeway to parking to check-in to TSA is still typical LAX hell.
LA politicians know they have one of the world's lowest rated, least efficient, and ugliest airports, and they are spending $5 Billion to try and put band-aids on the mess they have. It's not a full remake, which is desperately needed, it's just band-aids and additions to the circa 1960 bone structure; a central PeopleMover, an off-site rental car facility and massive parking structures, and a vague future connection to the city's Light Rail that will still require an hour+ long stop-and-go trip into downtown with a train transfer in gritty South Central just to get some local flavor and attract attention to your luggage.
Completion date? Hopefully before the Olympics in 2028.
But this does nothing to fix the aesthetics and cramped size of the terminals and overall vibe of LAX. To do that you'd need to bulldoze it all, start from scratch and spend about $20 Billion, which is what other countries do with their flagship port-of-entry airports.