When people talk about mobility shields and stuns all I can think of is
gawd I can't stand her and that insta aoe stun and triple dash knockups, oh and here have a dash/shield that scales off of your base stat. Ekko might have a lot of damage and a bit much in his kit right now but his numbers can be tweaked. RIven is just a ball of bullshit that even with tweaks, will most likely still be terrible to play against, literally good from 1:30 to 45:00. I can't even think of a legitimate weakness for her.