Maeve is a very good champ but you need to buy the right items: Haven or Blast Shield, Kill to Heal, Chronos, Cauterize are the best items. Only pick Wrecker if the enemy has a Torvald!
Try to do a dubble jump, pounce upwards, tripple jump, nine lives, punce, quad jump combo. Hit ur daggers and win the 1v1, unless its hitscan or a counter. If that play safe. If the enemy is spread out or someone is low, try to outflank the enemy.
As Maeve, double jumping in a fight is all of a sudden much more viable due to the air strafing changes. If your on controller you can jump in one direction then switch to the opposite direction for maximum jukes. Going in air is better vs console.