Some ideas on Janna's mini-rework
The general consensus about Janna is that she is too reliable in peeling for her marksman.
No skill ceiling. No skill expression. (which is why me and tons of people love her I guess 
)
If Riot's plan to diversify bot lane carries are going to be implemented, I think along with 
could get some tweaking in their kits to better accommodate non-marksman carries, especially the melee ones.
I imagine her stats would be reverted to pre7.19 as current Janna is just... "weird". Short-ranged Janna was better.
- Passive - Zephyr
Janna is aided by an air elemental who
ghosts her.
- Q - Howling Gale revert to pre7.19
- W - Tailwind Janna enters spirit realm, gains a burst of movement speed and bonus attack damage. Upon entering spirit form, Janna disjoints all projectiles aimed at her. Attacking or casting spells (including summoners) cancels the spirit form. Upon being auto-attacked, Janna will not be damaged but the spirit form will dissolve immediately and the ability is put on cooldown again. She is not immune to CC, DOT and AOE magic damage while in this form, although these can't dissolve the spirit form.
- E - Eye of the Storm CD revert to pre7.19. Cast range decreased to 600 maybe? Janna shields the target allied champion or herself for 2-3 seconds, granting her target bonus Armor & MR based on the target's bonus Armor & MR while the shield holds.
- R - Monsoon Janna channels for 1s, slowing nearby enemies for 40%. When the channel is completed or interrupted, Janna releases soothing wind that knocks back all nearby enemies based on the channel time and doubles nearby allies' health regeneration for 3s.