Random events are still limited to one a day, so it's pretty bad. You only really want telescopes, jade statues, or parrots. And once you hit the endgame, you don't want telescopes.
What about Pandora's box for random events? Anyone build one of those?
I'd add Cherry Trees to the list of handy ones; when your grinding through for upgrades the boost can be handy and Parrots are only good if you lack the 99s of course.
Pandora's just suck, it's kinda rare to not get a random within the day, even only sending out 1 or 2 rounds of voyages. One a day is the limit and if you get that 99/100 anyway why boost it?