23 Champs

If you're really good at champion knowledge you might notice that these are the ONLY 23 champions in the game that have ZERO mobility in their kits. They all have ways to impede enemies movement, but they've no dash or movement speed enhancement ability or trigger. (Items obviously don't count.) I bring this up because many of these champions lack in many places to keep up. It doesn't matter if it's the League of Assassins, or the League of Tanks, or the League of Mobility (which we all know is the real League that LoL is no matter what the meta is), all of these have always suffered from zero mobility coming from their kits. I say suffered meaning they don't see a lot of play (there's some exceptions to this, mostly in the support role though) and when they do see play they get bullied and picked on by all the Riven/Vi/Nidalee/Yasuo mobile-blow-you-up-before-you-can-even-ping-for-help players/champions out there. And this should be the case! (I'm not saying it's not.) What I am saying is there is a huge lack of what I would call proper balance, zero COUNTERPLAY (to use Riots favorite word for nerfing someone).
This is my proposal: It'll only effect these 23 champions (so maybe some changes to Annie and Morgan - since they're on this list). Give Summoner Spell Flash a 30% Cooldown Reduction if used by a champion with no innate mobility in their kits. (For keeping Annie and Morgan out of this, I'd say give Molten Shield a small MS boost while active, same for Black Shield but only when cast on Morgan herself.)
TL;DR: Give immobile Champs more access to Summoner Spell Flash.
Edit: Thanks to The True Bard and SS Warlock I forgot a few MS enhancements 3 of the champions I listed have, so it should be 20 champs, not 23. Sorry. :) (Those champs they mention are
) SIREN Berta also mentioned one of the three.
being fine exemples