Kayle Rework Idea

My thinking with Kayle is to work with her Judicator theme and focus on the ideas of Justice and Mercy. This focus allows her to play support (mercy) or build damage in a solo lane (justice). Also, the main part of her kit to me is the ranged fighter idea, so bring that into her passive. The splash damage would scale with both AD and AP, to keep her build path broad. Finally I would remove her current ultimate and give her some mobility.
Passive: Kayle fights as a ranged melee fighter (so she can purchase melee only items as well as ranged items, also has no projectile, so can't be blocked by Yasuo's windwall, for example). Any of Kayle's basic attacks on a marked target deal bonus splash damage.
Q: Fires a flame of justice that slows the target dealing damage. Also marks the target for 1/2/3/4/5 seconds.
W: Creates a circle of holy ground that heals allies the longer they remain in it. (opposite of Morgana's W)
E: Shields Kayle and provides increased movement speed toward a marked target.
R: Flies Kayle a short distance in a direction. When she lands she fears nearby enemies and marks them. Deals no damage.
Thoughts?