i think all charectors should have melee attacks and also please just consider the following i know alot of it would be very difficult but none the less i think they are worth it.
lewa:
he can jump once then fly for certain amount of time ( a bar showing how much )
while flying he can navigate using arrow keys and constantly going forward and can use a "tackle" when landing on an enemy by pressing the melee attack button
for elemental attack use mouse to control "wind" an be able to knock enemies over and lift them to throw and such
for his super attack lift all enemies then smash them to ground
secondary attack you should be able to draw a bubble with mouse around whatever you want creating vacuum ( then wichever part you vaccumed is temporarily immobile( can't move like if you do a hand it's stuck at that height and lat/longitude for a period of time )
melee:
3 different types
type 1: uses weapon (axe)
type 2: kicks
type 3: punches
and all 3 can be done after each other for 3 hit combos ex:weapon,punch,weapon or punch,kick, weapon
i think ill only comment fully on lewa but please use this melee type and allow wall jumps for all
charectors. and also by pressing a directional key twice user should roll in direction pressed
also the pakari shouldn't be only accessable for 30 sec but have a bar limit that can be regained by defeating enemies and the same with the rest other than gali and with kakama you can press the button that allows mask power to run faster jump further and melee quicker along with being able to run on water for short periods ( think about using this on levels near water to allow for mabye reaching unlockables and such.)
use akaku for searching finding weak spots on bosses and showing the direction to go as well as useful objects