Don't see her replacing kj or cypher. She literally has no utility which gives information except that wall but then surely we don't use her wall in mid or somewhere for info, thay wall is designed to block a site hit after one agent enters. Her Molly is slightly bad version of kj Molly. Her flash is literally breach flash but you can activate it anytime and breach flash is the worst flash in the game. Ult is good but can only find value in buy rounds.
Honestly she might be another ranked agent or double sentinel comps which happens rarely