Blink Change
Now to clarify a blink removal is easily obtainable, it is less than 10 champions use blinks. I feel blinks just offer no counter play and is just toxic to the game, now the blink champions would be compensated with another mobility spell in its place (most likely a dash-type). EDIT: Something I should add, is that champion blinks could remain but there needs to be some kind of delayed intel just like dashes to be healthy for the game so that the opposing player can properly react to what the user is going to do. For example Fiddlesticks channels for 1.5 seconds and Lissandra channels while revealing what direction her claw is headed in.
Now time for the most controversial topic of all time, a Flash removal. Flash, as we should all know by now, has a 99% pick rate and is insanely overpowered BECAUSE it can do too much for a single spell, every other spell can do one or two things where as Flash can do 4 or 5 or more things; plus blinks are not very healthy for the game, dashes at least you can see where someone is going even if it does a similar thing as in quickly go to a location (just dashes are quickly instead of instant like blinks). I will introduce ideas where the Flash mechanics will be split into four spells of initiating/play-making, defensive escape tool(no mobility, but still an escape), pass through terrain, and reactive threatening spell dodging; these spells may increase each individual mechanic's power slightly, but these spells will not be taken every game since they will only be able to do 1 or 2 things just like the other spells balancing out the game a lot more and create spell diversity and to see spell customization in the game instead of seeing the same thing every single game.
Charge: Quickly dash in the target direction. Can only be used within your vision range of an enemy champion and only towards enemy champions. (210 seconds cooldown) [600 units range]
Transparent: Become transparent for 1.5 seconds ignoring all damage from spells and attacks. You cannot deal damage, use spells, or move while transparent. (180 seconds cooldown)
Breach: Click on impassable terrain to dash through it. (180 seconds cooldown) [500 units range]
NOTE: This spell can only go through terrain that is already considered flash-able, if the terrain is too thick or you are not close enough to the terrain you will fail dash despite the ability being a targeted ability on impassable terrain. NOTE: If Azir ends up being problematic then Breach's dash will be the only dash exception to going through his ultimate.
Silver Wind: Send forth a directional wind around you towards the mouse cursor pushing all enemy units in that direction. For the next 1.5 seconds struck enemy champions cannot take damage or be disabled, and gain 250% movement speed when moving away from you; the affected enemy champions cannot deal damage or use spells however. (240 seconds cooldown) [600 units range]
Hope you all enjoy the idea and have a nice day! ~ Stacona