I don't think she should be straight buffed right now either, but she could have her current power budget adjusted within her kit. I think she should have tools to actually interact in laning when she's still melee instead. Right now, she's too incentivized to try to entirely avoid her opponent and stall for lategame. I don't think that's healthy. Old Kayle had the same issue, but she also had a workaround via strong waveclear which helped her avoid interacting -- that was unhealthy too.
Here are some ideas to let Kayle actually do stuff in laning as a melee champion:
I think Kayle's Q could have a short ranged dash tied to it, like this:
Tap Q: current functionality
Hold Q for the 0.5 second cast delay: Fly/dive forward in the Q target direction.
Her W's base heal should be changed to 60 / 90 / 120 / 150 / 180 (+ 30% AP) +7% target's missing health
in order to help her heal back up after melee trades and to further encourage her to pick up a couple health items to survive early on.
Her ultimate cooldown should be slightly lowered at early ranks.
COOLDOWN: ~~160 ~~**120 / ~~120 ~~100 **/ 80
For context, this is what the cooldown was pre-rework:
COOLDOWN: 100 / 90 / 80
And it used to cost 0 mana and she could attack during its effect. So while her ultimate did get significantly buffed with its new AOE damage effect, it did come with certain tradeoffs already, and I think the cooldown scaling with ranks is too steep right now.
Here's what she could lose in exchange for those buffs:
INNATE - ZEALOUS: Kayle's basic attacks against non-structures grant 6% bonus attack speed for 5 seconds, stacking up to 5 times for a maximum of 30% bonus attack speed. At maximum stacks, Kayle becomes Exalted, gaining 15% bonus movement speed when moving toward enemies.
ARISEN - LEVEL 11: Kayle becomes a ranged champion with 550 **500 **attack range. Additionally, Zealous's bonus attack speed is increased to 10% bonus attack speed per stack, for a maximum of 50% bonus attack speed.
TRANSCENDENT - LEVEL 16: Zealous is set to maximum stacks. Additionally, Aflame's fiery waves now deal true damage.
Summary:
Kayle trades a lot of power in her ascension for tools to function as a melee champion with her base kit. She gains the ability to engage/disengage with her Q as melee, which can be used as a re-positioning tool after becoming ranged. She gains a small healing incentive to build some health for survival while melee; this also gives her a unique niche at being decent at healing allied tanks. Her ultimate cooldown is lowered at early ranks, but remains longer than pre-rework. To pay for these buffs, Kayle loses the movement speed on Exalted, has her Arisen range reduced to the same as
's range, and loses her Transcendent true damage. Another change that might be good is to further reduce her Arisen ranged to
level, but make her E cooldown drastically reduced by being Arisen and let E keep its current 550 range (or be slightly increased to near
Q range).