So who is better?
Kassandra or Evie?
Why not having BOTH in the same game?
With Ubisoft points, you can unlock Evie Frye as a mercenary to help you in ship battles. She will increase by 12% your fire weapons of your boat (40 ubisoft points).
Lieutenant can follow you on land to fight with you in every missions.
Beware Kassandra/Evie team!
You can also recruit male or female assassin's crew.
Apparently it's very possible that during the life of the game, every main assassin will be recruitable.
So you can have Altair, Ezio, Connor, Edward (YES!) etc...
Imagine in 10 months having every main Assassin's heroes in your crew . This is One Piece level of fandom.