Instead of running into a friend you were more likely to run into a bachelorette party. Nellie's became increasingly more straight, and DC's gay community increasingly became more uncomfortable going there. It was always so crowded that straight people ended up spilling over into Nellie's. That changed when The Brixton across the street opened. You could go any night of the week and run into someone you knew. You could easily make out with randos up there. I also saw a video of the second floor dance floor on a Friday night, and it was very crowded. Only 2 of the 5 spaces they have planned have opened so far, but the drinks they serve are STRONG. It might also fit your criteria of making out with a rando.
Since, Kiki has opened next door to The Dirty Goose. Here's what I posted last year when someone asked about this.