I'm not against a Qiyana ulti nerf but you need to buff her base spells. Her scalings are pure horrible. There is no point of playing an assassin who can't deal dmg.
Her passive deals 15-83 + 55% bonus AD. It's not that signifiant but it's a passive so it's okay.
Her Q deals 60-160 + 90% bonus AD. It's shitty, especially when your W isn't a damage spell. So she has 2 Q and one E but the dmg isn't good because it's bonus AD. That means in early game, you have 0 scaling. You need to buy tons of AD before the dmg become signifiant.
The bonus damage on the stone element is interesting but not enough : 36-96 + 54% bonus AD isn't big. It's okay for an element bonus but the base dmg of the spell need to be buffed.
Her W isn't a damage spell.
Her E deals 60-200 + 70% bonus AD. Same thing, it's not big.
Her ulti deals 100/170/240 + 170% bonus AD and + 10% of target max health.
The ultimate deals crazy dmg while the rest of her kit is useless and don't make dmg. For an assassin she is dissapointing. Most of the time you end up being an "ulti bot".
**I would changes the ratios and the base damage : **
Passive : 10-180 + 55% bonus AD so the element change will be more rewarded.
Q : 80-240 + 100% total AD and not "bonus".
E : 70-220 + 80% bonus AD
R : 150/225/300 + 110% bonus AD, removed stun.
And i agree for Lee sin. His ultimate deals too much.