Suggestion: What if we had breakable terrain that fixed itself over a short time ?
Just my thought, It's highly annoying having caught someone mid river and they can just dash or get away from something because of their gap closer and you can't chase. So, what if some walls could be broken giving an open pathway to go through after for a short period of time? This way maybe we won't see so many mobility champs everywhere all the time.
Of-course i don't mean the whole wall just certain spots this way the jumping/dashing champion will have no choice to either find an unbreakable wall giving a more fair chance for immobile champs or B just dealing with it like every champion has to deal with their map advantage over them.