ketamine and whippets too. The whippets are getting quite worrisome. Basement parties are still alive and well, but yes it seems most venues have been demolished, killed by zoning or private-equitied. It's a tale as old as time (or at least as old as nimbyism), regulate something out of existence and then wonder where all the money, goodwill and life went. That and the fact that whenever anything out of the ordinary happens there's always a phone out. Always something to worry about.
I've lived in Brooklyn for about 20 years now, and while the parties still happen, most of them have become corporate. There are $50 covers and $15 beers, with wristbands you have to load a credit card onto instead of $5 covers and $2 beers in an illegal warehouse (cash only). The kids also seem to be taking ketamine a lot more than anything else, so they kinda disassociate and don't really dance that much at the clubs, whereas mdma and coke were things you ran into more when I was their age and people were not shy about grabbing someone on the dancefloor and grinding on each other for the night. They are definitely more sheltered and tame than we were as a whole, which isn't necessarily a bad thing I guess.