I personally like KJ more than other Sentinels because she can collect info, deal damage, lock areas down with util that deals damage, and the higher up you get the more you have to predict how the players are going to attack the site to hide your util and make good use of it while the others are more limited except for Cypher, still would prefer KJ over Cypher because of his util still being limited partially in comparison. that's just my personal opinion though.