After being on the forums for a bit I have realized something.

People hate spammable/resourceless mobility. Biggest offenders being Nidalee, Riven and Kalista. Resourceless mobilty has very little counterplay. You can't catch them without hard cc and you can't outrun them. The way I see it, Riot has only a few options:

Give these champions resources on their jumps. (Don't see this happening as it would kind of require a rework of the entire ability/champion)

Make them less spammable with longer cooldowns. (Might work on some but you can't put a cd on Kalista's passive and it would hurt a champion's damage output as well as their mobility so that might be too much)

Make jumps and dashes affected by slows.

Make spammable jumps and dashes affected by slows.

Riot is making knock-ups affected by tenacity. Why can't slows work on dashes? I understand this would hit every single champion that has a dash/jump but Riot can easily tweak numbers on those that are ruined/overpowered after the change. Mobility already dominates the game. This change would lessen the gap between mobile and non-mobile champions.