curious what would happen if......

What would it be like if you changed one small part on a champions kit. For example, if y'all changed 's stun into a silence would that be a viable change? or would it be a bad thing? Other changes I am kind of curious about would be: 's stun, change it to so after so many seconds without using her stun would lose the stack death lotus, make her become unable to shunpo for 1.5 sec after use her passive, make the attack speed buff scale istead of a flat 20% make his q no longer heal him but cause a % hp damage (I mean he has alot of self healing, why so much riot?) allow her to finish her jump before making any cc take effect (no more mid jump snares) make her q's mark last for 5 sec but gain a xtra energy back when consumed instead of triumpant roar healing make it give an attack speed/movement speed buff (I mean he is a bull when do they ever slow down when mad?) make his ult no longer stun just root and cause a little extra damage have illumination cause 15 + (6 x level) (+35% of AP) instead of its curret math (this might be too much of a buff to her damage tho; i'm torn on it)

Like I said this is all just speculation and curiosity on my part. I would just like to know what kind of impact it would have on the game if these few small changed where implemented.