The current state of the biotic rifle is very basic. The user is able to either use no scope or opt to use the scope, which is toggled with either the left trigger on an analog controller, or the right mouse button.
The Biotic Rifle shoots darts, if these darts hit an enemy then they will cause damage, if they hit a teammate they will heal the teammate. With this being said, there are no linear micro transactions between using a scope/no scope and targeting an enemy/teammate. This causes a cognitive conundrum for the player, especially in fast paced action.
The biotic rifle is primarily used for healing, so from a UX standpoint I think it would be interesting to add a special feature to the biotic rifle to enhance its healing capabilities. Something that makes the biotic rifle special from other weapons is its scope ability and unique hitscan