Her skill consists of two parts:

• Make her use rifle targeting (backline priority): Originally, the gimmick was useless. However, now she definitely has a niche considering how often Mica likes to toss in weird enemy formations.
• Buff herself: Her stats are good to begin with, and the buff is beefy – this makes her an excellent AR for all purposes.

Overall solid. If you need her gimmick, she's amazing. If not...well, AR powercreep is real.