Imo you should fix your mistakes before making new stuff
For example the assassin update, which (after the tank update which only had 3 big reworks) made Rito completely stop doing class updates because it just didnt work.
It left the playerbase of many champs dissatisfied because their favorite champ got "ruined" by a mass-update that didnt get enough time (and basically 0 feedback from players before they happened) like
and my friend 
Shouldnt you focus on fixing those first before starting to work on other champs like Swain and Irelia?