Possible Nerfs?

So this is my first discussion, but I got bored while dead the other day and I thought some interesting nerf ideas and wanted the community's opinion. Teemo: Limit the number of mushrooms he can have out at once/reduce the poison damage/reduce the time in which they disappear Heimer: If one of Heimer's turrets hit you underneath a turret it should treat it as if he basic attacked under turret and be shot/reduce the range in which he has to be near his turrets for them to be active Cassiopea: Reduce the range of her e/reduce time stunned of ult but also reduce cd by like 10 seconds Gragas: reduce damage ratio of his q/ increase cd of all spells slightly Ashe: Reduce overall attack speed except for her q Darius: Take away the dot of his bleed and instead add in extra damage to abilities based on stacks Taric: Reduce the damage ratio of his shatter/reduce damage done by his ult LeBlanc: Increase cooldowns of spells slightly/increase the mana cost of her ult.

Idk, like I said I was just thinking about it while bored. I'm not really salty to any of these champs except Satan, but what do you guys think?