Bought my first Lilith with Frontiers that I had been saving -Warrior Lilith - still my favorite.
Next event I managed to get 380 frags though I played that event more than the most recent event.
Most recent event managed to collect 680 Lilith frags and got lucky- Pulled Gunner and Assassin.

This entire recent event I only farmed VII.

The frag drop rates really seemed better this last event. I know that I did not put forth as much SoT refills as I did prior and I only managed to land one 50 frag drop..ironically the last drop I needed to get post 500.