No Nova uses antimatter drop anymore lol, they max mprime and run in with penta/synapse/boltorp.
Also melee is more of a fun feature in Warframe, since the actual damage comes from late game guns and their proper builds. Melee is only good if you fight low lvl enemies or get the damage multiplier up, even stealth damage bonus is useless when you play on defense or survival. Thats why I ended up using a pure damage frame in addition to a good squad. Loki is in defense/survival more of a defense supporter since he has radial disarm, he's not used as damage frame in group play. There's only a few actually useful warframes, if you really want to survive and kill strong enemies over a long time. After all, Nyx is the best warframe for anything, even though she's not my favorite.