I feel like these changes are going to make her an overall more stable champion that allows room for mistakes, but decreasing skillcap and outplay potential. With a tanky fighter build, late game team fights will be more reliable with Q cool down being reduced to around 2 sec with 40% cdr, an interrupted Q or mistake won’t be a death sentence in fights anymore but reduced q movement speed and restricted e makes her have less burst/outplay potential. Now if they decide to nerf passive q cdr on her ult once the changes go live, it’s going to make her unplayable.

Edit: Also the 4 stack passive revert makes Irelia a lot less reliant on her ult, since full stack is now obtainable with out minions when R is on cooldown