Little Idea to finaly end the "everyone needs flash" meta
1: Reduce the CD of flash, maybe even increase the range a bit, but it can no longer pass any terrain.
2: Using GHOST now gives your character the ability to walk through terrain for a short time (like 1 second) ONCE PER ACTIVATION. (Would work like that? Using Ghost gives you the buff, that only activates once you touch terrain, after that you have 1 second to walk through everything (like a ghost). When the second ends and you are still inside impassibe terrain, you get pushed out to the nearest possible point, like flash does when you would flash inside a wall.)
So what would that change? It would shift some of the insane power flash has to Ghost, while still keeping flash a good spell. Actually we could see more aggressive flash plays that way, since its no longer the "get out of jail free" card it is now, but still a strong summoner spell with offensive and defensive capability.
Ghost would now be the emergency escape Summoner, but since its not instant, it actually has counterplay.
That way Flash isnt a 100% must have any more and people can actually choose other summoner spells.
(Honestly, whats the deal with people defending the status quo so much they will flat out claim that a spell with a nearly 100% pickrate is balanced?)