Nerfing base movement speed should be the last resort
Not in reference to any specific champion but Ashe does come to mind. I find nerfing base movement speed to be the worst thing you can do to a champion. It makes it often so they literally cannot walk into or out of a situation. They are incapable of rotating smoothly. Playing them feels sluggish.
This isn't HotS. We do not have mounts. Walking to lane or across the map on a 325-335 movespeed champion is the worst feeling in LoL for me. As is buying T2 boots plus a movespeed item and still being around 380 movespeed.
Aside from feeling terrible due to map traveling. It feels equally as bad being literally incapable of dodging certain skills.
I don't know if people know this. But back when Riot initially buffed all base movement speed and nerfed boots. It was literally caused by Brand's pillar. As it became manditory for half the cast to buy boots lvl1 vs Brand as for many of them dodging his pillar was literally impossible without boots. But recently several champions are hitting the bottom brackets again.
I understand too many dashes cause mobility creep. But low base movespeed conversely just feels utterly shitty. I wouldn't wish it on any champion in this game.
So please Riot. Please keep this as a last resort. I would rather see a champions entire kit gutted than making them literally a drag to play.

ms buffs but he is a walking nukeing tank he doesnt need ms buffs
Crippled Old Man has trouble running from