personally i think we'd be looking at a new legend based in or around Cantha which imitates East Asian culture.
i think we will be looking at some kind of Kenshi type legend maybe imitating Kendo. but since we have dual swords... and a Kenshi is a swordsman. i'd expect to see Greatsword. maybe mix in some jiu jitsu for CC
#1 would be a 3 skill attack as you would expect.
#2-5 would be a mix of dash, retreat and block/react attacks
a heal would grant immunity to condi damage (not other types) for x secs and heal for X
utilities would focus on CC and throws.
an alternative would be to allow the revenant to stealth and gain access to a double dagger which would place them as your typical assassin.