Maybe a small revision of the Eagle totem barb could be simpler:Aerial ArtistryAt level 3, when you Dash you gain a fly speed equal to your current movement speed. You must land at the end of the granted movement speed and each time you stop the movement to use another action if nothing is keeping you aloft. You have resistance against falling damage.Acrobat armamentAt level 3, you can use your sneak attack features with clubs, spears, whips and quarterstaves. Those weapons gain the finesse trait.Death from aboveAt level 9, when you attack a surprised creature when standing above it, the attack is automatically a critical hit.Unbalancing dodgeAt lvl 13, when you use the dodge action and an enemy misses you, you can use your reaction to make a single attack against the attacker. If the attack hit, the target must succeed at a DC 8+prof+Dex str save or fall prone.Masterful spiralAt level 17, you no longer need to land until the end of the granted movement speed when you use Aerial Artistry. Once during the movement granted by Aerial artistry you can make a single attack against a target within you range. The attack can benefit from your sneak attack features.