Ana isn't trash lol, if you ask me she's gone up in healer ranks since Winston/D.Va isn't automatically every team's tanking line up.
Anti-nade is still powerful and Ana has the best burst healing in the game outside of Ults. Ignoring sleep darts which can either save you from a team wipe or guarantee a kill and she's as good as she's always been (minus the nade-nerf).
Ana + Mercy can make death ball comps nigh unkillable.