I just came back from Vegas today.
Visited the Pinball Hall of Fame (first time I'd been there since it moved), and have to say I was underwhelmed this time.

There are now lots of non pin games there now (many in poor condition),
About 40-50% of the games were out of order,
To much emphasis on Stern Pinball games rather than classics,
To many pins had LED's used as G.I. lighting that looked really horrid (pictures to come),
and poorly laid out arrangement of the games (other than the isle of wedge-heads).

It's still neat, but it needs a LOT of improvement.

... and if you do go there, go next door to Paradise games. They have some vintage games (on free-play) including a nice Fireball II pin.

My guess it's a liability issue.